Here's a few extra stuff from my films.
Worm: A worm crawls into view, turns into a ball and rolls off again.
Screenshots:

Chihuahua: A dog comes bounding into view. He falls over and gets up again. He then runs out of view and the camera starts to shake as though the dog is getting beat up. He ends up rolling back into view as a total mess.
Screenshots:

I based this on the very first Aardman film. I thought it would be interesting to try out in plasticene.
Purple: A green character walks into shot. He looks down to the ground and sees a hole. He checks if it is real and walks over it. He suddenly falls down an invisible hole. His hand reaches out and pulls the black spot over the real hole and waves goodbye.
Screenshots:

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