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               I wouldn't mind getting this desk for Christmas

It may look like a beautiful wood desk [1] but it's also a puzzle box [2] (or
rather, a series of puzzle boxes) wrapped around a pipe organ (link via
Hacker News [3]). Play the right tune (which can be changed and is stored in
memory board made entirely out of wood) and a secret compartment will open
up. There are other puzzles that will open up more secure compartments as can
be seen in this demonstration [4].

Unfortunately, it is one of those pieces of furniture where if you have to
ask the price, you can't afford it.

[1] http://www.kagenschaefer.com/pipeorgandesk.html
[2] https://en.wikipedia.org/wiki/Puzzle_box
[3] https://news.ycombinator.com/item?id=10778499
[4] https://www.youtube.com/watch?v=p5tenq55VPA

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