Oh, these are very cool. No way would I let my kids play with these. They go right on my desk.
From the site:
These blocks are exceptionally designed to teach Geeklings about the kinds of things one might encounter as a Mad Scientist. The set is made up of five handmade blocks that contains six sides of creative artistry. The detailed illustrations of the laser engraved images are flawlessly rendered to represent the key mad scientist memes that would correspond to each letter in the alphabet.
Get Them Here: Think Geek