Or you could do what I saw a Pride cosplayer do once, and make a backdrop of sorts to carry around. He used a stand-up cardboard like for science fair projects, and painted eyes and teeth on it. You could paint the vectors on one of those if you have enough skillz.
Past Cosplay: Death of the Endless (Sandman), Trinity (The Matrix), Austria (Axis Powers Hetalia), Orihara Izaya (Durarara!!), Mey-Rin (Black Butler)
Current Cosplay: Dodo Chaplet (Doctor Who)
Future Cosplay: Dalek dress, Mags (both also Doctor Who)
For cosplay photos please visit my tumblr