You could try buying some linoleum, fine carving tools, and colored inks, and then make a stamp out of it, but you'll have to be careful 'cause the process is very delicate.
Unfortunately, that's the best answer I can come up with at the moment.
MICROBES: Cute, yet... deliciously EVIL!
Of course, not counting our good nonpathogenic microbes! (but they are still just as cute!)
We may be gone, but the history is still here.