I have shot a few rolls with a ricoh "Auto half S". It's about the size of an Olympus XA but a bit thicker. Beautiful "retro" design. Crappy little vewifinder, though, and with some dust in the finder. BUT, I've been amazed at the sharpness of the lens (it is fixed focus, everything from about 5 ft. on is in focus).
HOWEVER, as I have so many more versitile full-frame cameras in my cupboard, it just doesn't get used anymore.
If someone out there wants it, I'll sell it to you cheaply - I don't know, $15? I bought it for $40, but I was probably being a bit of a fool at the time (impulse)...