that's all you need to get started.
so gather 9-12 charms. or 3-5 jelly strips. or 2-3 layer squares. or just 1 fat quarter. any scraps at least 5 in. wide will work.
hmmm. should i let you know anything else. well. i could say that this project bag was not designed to hold heavy objects. although it can. and it might not last forever and ever and ever. although it might. but that should not discourage you from making one.