I needed a holder for more heavy LED light (kitchen/work model)
https://www.alza.cz/emos-led-osvetleni-lista-300mm-5w-d5111135.htm
I remixed a holder from Mr.Baham to be more robust and have longer "clamp".
The clamp size is 23x4,5mm. I believe the size should be universal for this type of light.
I printed mine in Prusament Orange PETG in 0,2mm layer height.
I used T-nut from 3Dprintedgr to mount it to my printer, using screw and nut from printer spare parts.
https://www.prusaprinters.org/prints/45082
The author remixed this model.