Here are my first two animations for FIEA. It ended up being a bit of a review, so I tried to make it interesting. The first one was a basic ball bounce. On the second one, I wanted to play with overlapping action, so I did the quintessential tail ball.
I used a program called Plastic Animation Paper. It is like a digital animation light table. You can get it for free from their website. I used it last year for planning out 3D animations, and I highly recommend it.