What foam do you use for cases, and where can I get some.
for my first case I used egg-crate foam, but I just bought a case from amazon.
Craft/fabric shops with an upholstery section are a good place to get foam for cases. Fabric stores would be more likely to have it than generic craft stores. They sell it for things like cushions or padded furniture, but it works well for yoyo cases as well.
Egg crate foam from Bed Bath and Beyond
I used bed foam from Hobby Lobby, they sell lots of cases and foam.