I wanted to mount my light base in a corner of the house above my table because that would have been the best option for me. I cant find my old wall mounts for these and I decided to improvise. 

The version I'll leave here is updated since I had to modify the one I made. 

Its held with the “nut” that holds the reflectors around the light bulb. You'll have to set it in the round part and screw it in. It would have been easier to also print that nut and put some handles in it to help screw it in place from inside.

The big slit in the bottom also lets you to get the cable trough and I'd say its also enough to press the channel button on the back .

Printed on Neptune 4 Standing with supports turned on. I printed it at 0.2mm resolution. Nothing special otherwise.