Hello!
Here I have a site, where you think about something and the "site" tries to find, what you think about. I works good and if you thought about someting, that the "site" is not finding, you can give up and tell and than you can see, what answers did not match. (You will be asked about "is it flat?", "round?", "can you eat it?" or something else).
http://y.20q.net/anon-de
It's german, but you can play it in some other languages of course english too, only hit the right flag.
Greetings Sandon