A few years ago an Adam Savage video showed how he made a light for his work bench using LocLine to be able to position it where light was needed. I finally decided to copy the idea. Vast amounts of babbling about my build can be found here. One of the STL files I used came from the LocLine Fittings on thingiverse, the OpenSCAD for the base part imports that STL.
The LocLine snaps onto the base part.
The LED lamp attaches to the top part which also attaches to the top of the LocLIne.
The spacer was used to center bolts in the existing holes in the workbench I use.
The splint is a block used to secure the PVC pipe I used at the base for more security.
The author hasn't provided the model origin yet.