Picked up a function generator kit - Elenco FG500K - for a high schooler coming to visit my workplace tomorrow to 'shadow' me. Should be a good little project for him as an introduction to EE. Anyhow, I'll report back on how well it works. Only $33, and it does 1Hz to 1MHz, so great for audio work. In particular, the sub 20Hz sine and 10kHz square signals are what I find useful for tuning amps.
I'll try to take some photos of the kit. Great manual and well designed.