Applejack as Gimli

Okay, so that's four of the Fellowship down!

Dwarf ponies are short and stocky, and have long shaggy coats, manes, and tails compared to the other races of Middle Earth. Unicorn dwarves have short horns that are slightly curved. Once all the major characters are done I might make a couple of background unicorns and pegasi into dwarves just so I can show their physical traits compared to unicorns and pegasi of the other races.

Rarity's next on the list, though I'm not sure when I'll actually start.