I made this Purple Minion costume so I could wear it to the elementary where I work. It took me a week and I spent around 15 dollars on all the materials. The kids at school went crazy when they saw it.
The body and eye are made out of cardboard. I covered the body in purple felt and the eye/goggle with aluminum paper. The mouth was cut out and both the black and the teeth are made from craft foam, and the hair was the most difficult, made from two rolls of yarn.