This is a practical footstand for the Mini Maglite.
Fits flashlights with a width of 18 mm (0.71 inches). The base is 35mm (1.38 inches).
Fits with Mini Maglight Diffuser which you can find here.
https://www.prusaprinters.org/prints/126127-mini-maglite-diffuser
The author hasn't provided the model origin yet.