You might check out www.theMusicStand.com (sorry I haven't learned how to do blue clickies yet...). They have everything from T-shirts to mugs to clocks to tote bags to lamps to music cabinets to god knows what else, all with a music -- even particular instruments -- theme. Some of it is dreck, but some is fairly cool. I get their print catalog, which I find a bit easier to use than the website, and have ordered quite a few things over the years.

Cheers, Nancy