cheap micro speaker with USB audio anyone ?

I'm thinking of adding a secondary audio out to my machine running squeezeslave.
I can add a second USB card, but I though something like X-mini, but with both USB power and USB audio might do the trick ?
Inexpensive is nice. I don't want bluetooth (no need and seems expensive.) The speaker just needs to be able to reproduce voice at reasonable volume. Musical quality is not really a question.

Any ideas ?