I like costumes, but not so much cosplay. I see cosplay as being much more serious, with a greater need to fully commit to your costume. I have made Weeping Angel costumes from Doctor Who and a Lumpy Space Princess costume from adventure time... but I definitely wouldn't call it cosplaying.
I've also made my nieces some fun costumes before, like Arya Stark from Game of Thrones, and the First Doctor from Doctor Who.