Ooo, this sounds fun! Would any of these be interesting to you?
1) Put your iPod/MP3 player/media player's favorites playlist on shuffle, click the next button 5 times (to make sure you get something random!) and on the sixth song, draw/sketch/paint/etc. the imagery that comes to your mind as you listen to the song. But you only have the duration of the song to complete your art!
2) Do some fanart for your favorite book!
3) Do some fanart for your LEAST favorite book!
4) Draw/design an advertisement for your favorite food!
5) Draw the Superman logo with your first initial in place of the S. If your name starts with S, then incorporate it in the Batman logo!