Gotta love a Turing Machine! From the description:
mechanical universal Turing machine (given an infinite track). It uses ball bearings as its memory and has no electrical components, other than a small motor used to drive it. This is a quick overview video filmed at Maker Faire UK 2011.
Comic Alliance has The Complete Marvel Comics Family Trees by Joe Stone [Infographics]. They are quite fun!
Engadget has found some cute but pricey steampunk usbÂ cuff links.