Puzzlepiece Bluetooth Keyboard Tablet Holder

This is a flat-packing tablet-holder attachment for a bluetooth keyboard. All three pieces can be easily printed within a 120mm x 100mm area (4.7in x ~3.9in), to a height of 5mm (0.2in), and can be printed with low % infill and maintain rigidity.

It was designed for use with a 2012 Nexus 7 (though it should fit most other caseless tablets and phones), and a "BATTOP Ultra-Slim Bluetooth 3.0 Wireless Keyboard," currently $12 on Amazon (w/ Prime shipping available):

http://www.amazon.com/BATTOP%C2%AE-Ultra-Slim-Bluetooth-Wireless-Keyboard/dp/B00JQZUIP2/

This keyboard is identical to several other generic bluetooth keyboards available on Amazon, so if this one isn't available, look for one that's similar.