Hey Peggichu, I don't know what kind of contests 
you've run in the past, so maybe you've already 
done this, but I've had *awesome* response to 
"captioning contests" on my sites. I even have one 
going on now on my Esca movie site.

Maybe if you took a cel with a funny image asked 
people to try and come up with the most amusing 
caption for it, a la anime-cel.com... At the very 
least, it'll provide you with lots of 
entertainment when the entries start rolling in!  
^_^