Well maybe not anything, but what follows is an Instructable about how we at oomlout.com
build everything we produce.
It is a technique we call Interlocking T-Bolt Construction. It consists of a T-cutout in one piece of acrylic (or any 3 mm stock) and a receptacle in another piece. These pieces can then be bolted together making a very secure 90 degree joint. A deceptively simple technique that has unlimited possibilities.
All that is required is an idea, some drawing software, and access to a laser cutter.
Lets get started.(shameless plug)
to check out our delightfully fun open source products try visiting oomlout.coma note on metric units
it should be noted that throughout we refer to 3mm thick acrylic. This is often sold as 1/8" acrylic and is not a big issue as the difference is less than 0.007".