Heya, just posting this here so I can link it to people... I'll be honest, I'm not terribly serious about MLP collecting at this point in time, so I'd rather trade for these things where possible instead of outright buy. I don't mind waiting for a really lucky price, since I don't have a lot of display space anyway.
G1 Snuzzle
G1 Chacha the Llama
G1 mail order Scribble
G1 mail order Dabble
G1 Starglow
G1 Princess Tiffany/Amber (bonus points if the baby dragon is included)
G3 Twilight Hope
GIANT G3 Minty plush
GIANT G3 Kimono plush
G4 FS Applejack's outfit (I already have the pony)
G4 FS White Celestia
G4 FS Cadence
G4 FS Shining Armor
G4 FS Alicorn Twilight
G4 FS Black Tie Pinkie Pie
G4 Elements of Harmony mini figs
G4 Bipedal Spike figure
and Ponywear!
I don't have a lot to trade right now, but I'll update this list later with what I can offer.