This DIY Tutorial will guide you step by step in making a Duct Tape/Zip Lock Pencil Pouch with elastic band. Students can make them the first week of school and use them to attach to their notebooks so they never forget their supplies when coming to class! Each bag costs around $0.70 if you buy supplies in bulk. I purchase bags from Walmart, elastic bands in bulk on eBay and duct tape on the teacher site https://www.naeir.org/ (free teacher subscription required).