Here you go. I went ahead and added all of them, in case others are looking for them as well.
Keychains:
Pinkie Pie: 0 21664 82510 5
Rainbow Dash: 0 21664 82511 2
Twilight Sparkle: 0 21664 82512 9
5”
Pinkie Pie: 0 21664 82506 8
Rainbow Dash: 0 21664 82507 5
Twilight Sparkle: 0 21664 82508 2
Fluttershy: 0 21664 82517 4
Rarity: 0 21664 82539 6
Applejack: 0 21664 82527 3
11”
Pinkie Pie: 0 2166482502 0
Rainbow Dash: 0 21664 82503 7
Twilight Sparkle: 0 21664 82504 4
Fluttershy: 0 21664 82516 7
Rarity: 0 21664 82540 2
Applejack: 0 21664 82525 9
Octavia: 0 21664 _____ _ (I haven't found her yet!)
20”
Pinkie Pie: 0 21664 82514 3
Fluttershy: 0 21664 82515 0
Twilight Sparkle: 0 21664 82518 1
halicabi