I actually think you have some good, viable domains there. I wouldn't just give them away. Why not try selling them? Since they haven't been developed you won't get much, but still...

I too own a bunch of domain names for businesses I intended to develop but decided against. My next move will be selling.

Sylvia
http://smallbusinessstartup.biz
Startup & Biz Plan Help
http://smallbusinessstartup.biz/blog