This is a clip-on soft box for the IKEA Jansjö LED work lamp.
It works just as well as a small soft box for your desktop photography projects, and as well as a lamp shade if you just want to soften up the light from your Jansjö work lamp.
The softbox is compatible with all 3 versions of the lamp (Stand/Clip/USB).
The soft box is available in 83mm and 93mm diameter sizes. The 83mm provides somewhat more direct light than the 93 mm version.
For those who don't have a 3D printer, you can purchase this clip-on soft box here. If you do have a 3D printer a STL files are available for free on Thingiverse: