This is the space 3D puzzle toy made of 4mm polyurethane foam sheet material.
Instructions: Feed attached dwg file into lasecutter, take 4mm sheet foam (yoga mat) and enjoy assembling it :). On the second picture there is a real thing, but old version. Attached version is more lasecut friendly and works straightforward.
There is also SW and STEP attached for you to play with it and/or take a look how it shall be assembled.