Question: What's the easiest cosplay to do in Kuroko no Basuke?
Answer: LOL, any. XD The thing is, all you need to do is buy a wig or dye your hair. Then grab a random pair of PE shorts or basketball shorts and a random color t-shirt. Boom! There's a cosplay. (I mean there are other little details, but that's the base of it.) You don't need their uniform to do it. Remember, they have practicing to do too!
I'm going to be using this for myself, upon the request from one of my friends since I just recently dyed my hair bright, bright red. LOL. Oops.