Are you interested in a Toshiba TMP47P443VN ? This is a one-time-programmable 4-bit microcontroller in 28-pin "sdip" package (pretty boring looking.) I bought some off eBay a while ago and have enough that I'd be happy to just send you one... (In theory, I was going to learn to DO stuff with them, but tool support seems to be pretty non-existent.)