You can use any bag or box for craft supplies. If you don't have something, check out these cute, portable craft organizers!
360 Craft Tower - Clear Rotating Organizer With Shelves
Storables 7 Scrapbook Paper Storage To Smooth Out Your Paper
Awesome Kids Craft Storage & Organization Tips - Toddler Approved
Craft Room Update – Laura Evangeline
Portable Craft Organizers - Lazy Crafting
Portable Craft Organizers - Lazy Crafting
Portable Craft Organizers - Lazy Crafting
Knitting Basket Amish Wicker Yarn Storage & Organizer – Amish
Craft Storage Turntable by Modern Retro - The Lazy
DIY Dollar Tree Pegboard Tool Organizer!
Rotating Craft Caddy