wtb glock tupperware box for g20

just got a g20 2nd gen but no box for it. i like to keep my guns in there boxes so i need a cheap g20 tupperware bot to put this in with paperwork if possible. i am storing it in my g20 duty weapon box but want to keet this open for later use. thanks for any help or leads on boxes. i am in indiana north centrial (south bend area)