Ok, yes, thinkgeek.com is selling a bacterial growth kit as well. But this one's better. See, besides the petri dishes and growing material (nutrient broth) this kit also has 5 sterile swabs, iodine and alcohol. The swabs are great 'cause you can swab anything (including you) with safety and know that whatever grows on the plate was what you sampled - not already on the swab.

Ok, so I'm a stickler for good technique. Sue me. Anyway it's also got more detailed instructions (including ideas for science fairs) and the alcohol and iodine let you test antibacterial resistance. It's also got disposable 'BioHazard' bags to throw the dishes out, or just to store your lunch in.

I've got a boatload of weird science things to post...this is just the tip of the iceberg.

Mad Biologist Use: Try growing bacteria with souls, or at least vocal cords. Then when you Lyslol them you'll feel bad.

Or make them feel love. Seriously, bacteria are so promiscuous, you could start a soap opera on the results.