Here's something rather unusual, an amp for an on-th-go kinda guy (or gal): http://seks.craigslist.org/msg/3216697796.html

Suitcase Guitar Amplifier for the Musician on the road - $100

"Yes it is a Samsonite, Loaded with a Crate GFX amplifier with DSP Effects. Looks and sounds great, killer effects, Has wheels, a retractable handle, and room still for your clothes, gear, beer, ect. If interested call **** after 3:00pm. if no answer leave message. "