If there ever was a recipe for success it would certainly include Legos and Biology.
Gel Electrophoresis allows the sorting of molecules based on size and charge and is a very common and useful technique in molecular biology. Like most lab hardware is quite expensive for what it is, a fancy tupperware container with two wires. Luckily if you happen to have a laser cutter*, you can build your own using a sheet of acrylic and welding glue.
But even that was too complicated for Joseph Elsbernd, who using a few legos and a bit of acetone built a really nice gel boat and electrophoresis chamber. All it’s missing is one of the legos with a hole on each side combined with banana plugs to supply the voltage, some 3D printed combs and you are ready to run gels.