Heck no, Lulu!
There wasn't much that Celestia needed in life; in fact, being immortal, you happened to lose interest in most physical things. The only things that Celestia wanted was food, and plushies. Starting from Starswirl, she had a plushie made of every personal student that she had the privilege to teach, and she took pristine care of them, to try and make them last as long as her. Of course, that wasn't going to be the case, but she could always have new ones made, and she liked plushies.
Of course, eventually, there was a problem with that. Celestia liked things down to the minute detail, and that often meant making the plushies life-sized. While this wasn't a problem for the first ten plushies, she was beginning to feel a bit cramped by the twenty-fourth, and was desperately looking for another place to put these plushies away in her room by the seventieth. They were now in a large storage area, but every time, Celestia couldn't help but shudder whenever she had flashbacks to what she now called the 'plushie invasion of her room'.
At this very moment, in fact, Celestia was heading towards the very storage area that held all five million plushies. She cherished this area above all her physical possessions, and guarded it with a combination of state of the art security systems and magical barriers and traps, both working together in harmony to guard this most sacred area of Celestia's. Only alicorns could bypass all these security measures, and Celestia was fairly certain that Luna had no idea that this place even existed; a thousand years was a good amount of time to hide something from your sister.
"Oh, don't you worry, my plushies, momma's coming for you~" Celestia sang as she twirled about the hallway. This hallway, however, was not your ordinary hallway, as it had traps that would activate at a moments notice if the pony striding down the hallway wasn't an alicorn. Rocket propelled muffins, turrets that would pop out from the walls, firing streams of licorice, and the floor would turn into quicksand; all that and many more defensive systems that were known only to Celestia were in place, and she danced down it like she didn't care.
Eventually, there was one final defense in her way; it was a simple looking door that seperated her from the plushies. It wasn't simple at all, though, despite its look; this was a four hoof-lengthed thick wall of steel, and unless you had explosives (and lots of them), you weren't getting through; although, you could simply be an alicorn with a long enough horn to use the horn lock in the middle of the door. Deciding to do just that, Celestia lowered her head slightly, and carefully slid her horn into the lock completely, waiting for the door to accept the horn. A short moment passed before a 'ding' was heard, and after Celestia removed her horn from the lock, the door began to slowly open, revealing to Celestia the magical plushies stored inside. Squeeing with glee, Celestia bounded into the room, and picked up a random plushie, a stallion, and she was hugging it tightly.
"Oh, Hammerjack, I've missed you so! Why, without your wonderful invention of the hammer that was originally made to crush the skulls of the enemies of Equestria, I wouldn't have nailed, carpeted floors! Oh, I wake up every morning to those carpets, which stay snugly in place thanks to your hammer and some nails!" She set Hammerjack down, and ran forward to greet another pony, a pegasus mare, pressing her hoof to the plushie's nose gently.
"Boopsie! You were the very first pony that wasn't so scared of me, and even teased me! Ponies to this day still 'boop' each other on the nose after seeing you do it to me without getting fried to a crisp!" She levitated the mare away, and ran forward around the plushies to hug two ponies together, which were near identical in looks and only differed from each other by a small stripe down their tails and manes. It didn't help that they had equally sounding names, either.
"Mia! Nia! It's so good to see you two rascals again! All those jokes you two played on me were both aggravating and funny! Oh...If only you could've met Luna. She'd have enjoyed collaborating with you to create some of the greatest pranks ever! There's so much more that we should have done together..."
The sudden clop of hooves hitting the floor alerted Celestia, and with a scream of rage, her mane and tail blew up in flames. After turning around, she stared down the pony that managed to enter her most private sanctuary, her shrine to her five million life sized plushies, and spoke in low, threatening tone, with a cackle of electricity running around. She did not take kindly to ponies sneaking up on her, even more so in the most sacred of places.
"HOW DARE YOU TO HAVE ENTERED MY MOST SACRE-"
"Tia?"
Upon hearing Luna's voice, the cackle of electricity disappeared, her mane and tail blew out, and Celestia's anger melted away to confusion.
"Lulu? What are you doing here?"
"I got bored, and started following you; you have...A lot of plushies, sister."
Celestia followed her sister's gaze around the storage room, and nodded, smiling. "Five million plushies, Luna, of past students and ponies that have contributed something amazing to Equestria. Building a monument for every one of these ponies would be too expensive, and not many ponies would know why they would be praised for something so simple; instead, I have plushies of them made, so that I can remember and praise them what they have done for Equestria myself. Erm, how did you get past my defenses? How did you even find this place, anyway?"
Luna smirked at her sister, clearly amused by the questions Celestia asked, and took the time to make a quick shot at her sister. "Well, it's not hard following a rump as large as yours, Tia! I also have some invisibility spells and noise-dampening spells, which I used to great effect. Anyway, after I followed you, I saw this sign that said that only alicorns could walk down this hallway. I'm obviously an alicorn, sister."
As her sister was rethinking the idea of an 'alicorn-only' defense system, Luna looked around the gigantic storeroom, with all the plushies assembled, and couldn't help but feel overwhelmed by the presence of all these plushies; they all had a story behind them, with accomplishments of making either some of the more mundane inventions in Equestria that she couldn't bear to live without (bubble baths were absolutely delightful) to more complex things that were purely for show (such as that 'defense' system she just walked past).
"...All these ponies contributed to Equestria? Every last single one of them? Five...Million of them, you said there were?"
"Yes, five million of them, and all have bettered Equestria in some way, shape or form!"
Luna continued looking around the storage unit for a moment, then slowly wrapped her hooves around one of the plushies, which happened to be a replica of Rainbow Dash; she squeezed it gently as she asked her sister a question.
"May I take this on-"
"Heck no, Lulu!"
"Tiiiiiiiiiia!"
Celestia shot her sister a glare that made Luna whimper, and she lifted up one of the plushie's wings to hide her face from. The cute sight of Luna hiding behind a plushie's wing softened Celestia's anger, and she strode up to Luna, levitating a plushie in the likeness of Lyra (this plushie was made because Celestia enjoyed watching the unicorn bashing her lyre over Blueblood's head), and she sat next to Luna, with a slight smile on her face as she gently poked Luna's side with Lyra's horn.
"You won't be able to take them, Lulu, but we can play with the plushies here." Luna looked up from under plushie dash's wing, and offered a smile at her sister.
"Play, with the plushies? All of them?"
"Why, yes, if we have the time to play toget-"
"Then let's start now, sister!"