WTB: Manual 35mm film camera body compatible with Pentax Bayonet Mount

Manual cameras with Pentax-K mount were made by Pentax, Vivitar, Ricoh,
Sears, Chinon, Cosina, Miranda, Zenit. An incomplete list of models is here:

http://en.wikipedia.org/wiki/Pentax_K_mount#Cameras

I'm looking for something with manual focus, manual exposure. Don't need a
lens.

Willing to pick up and pay $20, cash. Must be in good working condition.

Angel