I'm learning LISP at the moment and I am about to get to the moment where i will be able to start doing what i wanted to do(web apps with lisp). Every time I use a new language of framework I try to do a very fun very crazy project using 2 or 3 APIs to make a mash-up. So i ask you guys if you have any weird, no so common, fun API to play with.
Last time (i was learning scriptaculous and zend) i did an ajax chat that used 3 APIs to gather data and images from the "semantic" of the chat conversation... it was fun and weird!(of course it was far from perfect so that added extra fun, talking about something and getting pictures or definition of stuff barely related was actually pretty interesting, like having someone who doesn't know your language trying to search in wikipedia and flicker for references of what your saying)
so... what do you suggest?!