Pocket Rock-it Sampler 16. Looks like this one, but it's the sampler version:
It can actually multi-track several samples while you play; funky little unit. Also makes some interesting sounds when the battery is dying.
I haven't used this in years, but the last time I did, it worked great. Headphones not included; I lost them years ago. $20.
Dean Markley ZH-7 acoustic pickup. Looks like this, but with slightly different graphics:
It's about a dozen years old, in good condition. No case. $20.
DOD Vibro-Thang vibrato pedal:
About 10 years old, hardly ever used, in great condition. $20.