24 and 36 are my favourite!:)
I'm liking 30! :)
question... are we meant to feel endeared towards the bacteria or not? If so, the cute factor is an issue - if the bacteria is the villain of the piece (and I assume it is?) then 22, 31, 32 and 36 are transmitting a touch of villainy.
To be honest, I'm not 100% sure because not all bacteria are bad but I suppose they should be bad, I was more experimenting with shapes so I agree that if they are evil that the ones that seem more spiky work better
I'm liking 22. There's a touch of Pinky and the Brain in that one. Lovable but evil.