Today I completed the last of five 1:6 scale Memex. The Memex was a thought experiment by Vannevar Bush that was published in the early 1940s. (wikipedia has a nice article about it)
Each little Memex contains a Raspberry Pi which accepts input from the 39 buttons and the lever. It also drives the two displays. So far the collectors who purchased the Tiny Memex have used them for things like a personal memory system (think Anki cards) and one person even ported Smalltalk to it!