I have a tendency towards original designs, but I'll also pick out characters from other media from time to time. I love making puppets, I actually started making them before I discovered cosplay. The first time I went on stage in a masquerade was with a puppet based on Osamu Tezuka's Phoenix.
I also had a history of making wings before I started cosplaying, so it's no surprise that I like incorporating them into my work as well.
If I could sum up my cosplay projects it would be fursuits, puppets and big dresses.
You can also find me on DeviantArt where I like to post sketches, puppets, custom ponies and the occasional cosplay WIP - http://starlightglow.deviantart.com/