During the Museum night 2015 in Amsterdam, Waag Society opened the Late night pet shop in the Theatrum Anatomicum of the Waag, where you could buy your microbes.

Waag Society has a biobank full to bursting with friendly, adorable micro-organisms. During the Museum night, their microbes were on sale! Bacteria, fungi, molds, yeasts, and algae. You could buy these tiny cuties as micropets and experience the fun reward of caring for these tiny creatures. Wake up every morning and be welcomed by the enthusiastic growth of your flock.

http://waag.org/en/event/museum-night-2015-late-night-pet-shop