Here's another couple of ideas: iron-on decals so we can choose our own t-shirt colors or put them on polo shirts; stick-on decals for identifying instrument cases (or perhaps stencils--a stencil and a spray can turn an instrument case into an ID--perhaps, for an extra charge, the fish/banjo decal or stencil could be bundled with a site-name stencil. I'd love to have the fish jumping out of all my cases with --seed under it.

--seed, on top of it