We did the same thing to our favorite cookie monster shirt..which you can find HERE..and till now its our favorite bag to carry whenever we leave the home!
I have bins from Ikea for toys but I made this to kind of motivate him to put his cars in one box and not in his boots, inside pillow cases, under the sofa cushions or the carpet !
Its not the neatest i could do...infact I did it 'while' I was tidying the toys up..that kinda quick whip project.
A box, a pyjama and hot glue are all you need.
Call me frugal..I'll take that as a compliment !