AnyThing - A The Thing Story - Dynamic Creatures

Let's use CGI to do something where Rob Botin had limits: Make the small things move - and fast!
There are three scenarios for Things:
1) They use objects they find
2) Even if they look inpractical, they move as good as they can, and very very fast.
3) Also body horror. As I have Invasion scenario in mind, I will do a cop and an old lady with her cute little dog additionally.