An idea that I'm not throughly sure where it sprang up from. Besides the noticing of blue and pink bunnies in cartoons.
A while back the Doctor Who group had a poll over what contest to have next as a drawing challenge, and one of the ideas put forth was doing a crossover. This idea for a contest isn't going to be used, but I started thinking along those lines.
The first idea that rang to mind was a crossover involving the Sixth Doctor and an 80's cartoon that was having it's hay day during that era. I won't state what that idea is because it's goofier than crossing Doctor Who with Tiny Toons & Yin Yang Yo. That other idea is only going to come out if there is a contest down the road.