Some people collect stamps. Wolfram Research co-founder and author Theo Gray collects elements. Step into his office, and you’ll see a silicon disc engraved with Homer Simpson, a jar of mercury, uranium shells and hundreds of other chemical artifacts. But his real DIY masterpiece is the world’s first “periodic table table.” Within this masterfully constructed table-top lay samples of nearly every element known to man, minus the super-radioactive ones.

[Via Videosift]