Engineer's toolbox from Team Fortress 2, made of 110lb cardstock, X-Men TCG cards and some Magic: the Gathering cards along with some bamboo sticks.
Conveniently fits one Telemax Teleporter system, which can be "built". Teleporter unit can be removed from the inside of the toolbox so you can use either for other purposes.
Sketches of the inner mechanisms can be found here:[link]
Box dimensions: 120mm x 60.1mm x 65mm
Teleporter dimensions (assembled): 195mm x 45mm x 35mm
Time to build: 2 days
Time spent planning: 1.5 days