After years of neglect it appears that microbial art is making something of a come back. Because we'll be talking about Fungi tomorrow here's a Fungus made out of bacteria by Niall Hamilton . Hmm, that's just wrong.
For all your microbial art needs there is the MicrobialArt website. You can see more from Niall Hamilton, and many more.
From an interview at MycoRant:
Hamilton uses both fungi and bacteria in his creations, and each no doubt has its own advantages and disadvantages. “I have to say I’m rather envious of other artists’ work with bioluminescent bacteria or slime molds,” he offers, adding, “both of which I think are very visually impressive. But, I haven’t had the opportunity to work with them (simply because I haven’t isolated them). Bacteria I like for the fast growth and clean edges, but they generally are a lot more limited in range of color and texture than the fungi.”