The the iMousePad is a mouse pad from Russian design studio DarkDesignGroup that should help hold you over until you get your iPad. The waiting is always the hardest part.
The the iMousePad looks just like a real iPad. If technical details aren't a big deal, then the the iMousePad is the perfect iPad substitute. Sure it can't actually do anything, but it looks cool and clever. And looks speak louder than capabilities at times.