Here's something I found that I LOVE. It's not from my shop -- I just really enjoy it.
http://www.etsy.com/listing/42689294/guinea-pig-glittery-bedroom-door-sign-b
...and then basically everything she has with guinea pigs and capybaras.
http://www.etsy.com/listing/97671375/guinea-pig-capybara-aceo-limited-edition
Has anyone else found something on Etsy that they just can't resist? Do you have something in your shop you think cavy slaves would love?