Quantity   Component name
1 × yard of heavyweight home decorator fabric or quilting cotton the heavier you go, the less interfacing you need!
1 × yard of fabric for the lining
1 × yard of fusible interfacing I use Pellon SF101
1 × 24" zipper with two pulls for main opening I'm using zipper tape cut to length - https://www.amazon.com/gp/product/B077XC6ZSN/
1 × 8" zipper for front top pocket or zipper tape
1 × 11" zipper for front pocket
1 × 8" zipper for lining pocket
4 × yards of 3/8" double-fold bias tape I may or may not actually do this part on the practice backpack
1 × yard of 3/8" elastic
4 × yards of 1 1/4" polypropylene webbing y'know, backpack strap stuff
2 × plastic ladder lock buckles these things: https://www.amazon.com/gp/product/B07X4FRVBY/
1 × coordinating thread
12 × giant washers to be used as pattern weights because real pattern weights are stupidly expensive