Typically, I Spy would be played with a friend or friends sitting/standing next to you and you would think of something to 'I Spy'. Of course, we can't do that on a forum.
So... The idea is that you find a random image on the web or create your own and post it. Other people have to guess what you spy. The winner gets to post the next image. If an image gets no reply for 24 hours, then the first person to post another image is the I Spy'er.
EXAMPLE
Forumite 1: I spy something with my little eye something beginning with... B

Forumite 2: Baby?
Forumite 1: Correct!
Forumite 2 then posts new image.
I hope this works well! Here we go! Easy one to start of with until people get the hang of it.
I spy something with my little eye something beginning with... S.
