My wife was given a generic electric toothbrush that plugs in to charge instead of resting on a charging dock like Sonicare. It was kind of a pain to charge, so I made a simple stand that allows charging. I'm just getting started with 3d modeling and printing so it's pretty basic. The toothbrush sits in a larger diameter hole and rests above a space for the charging cable. There's a slit in the side for the charging cable to fit through.

There are 2 plates in the model, one of which is a small section of the top piece to test if it will fit your toothbrush. Presumably you could scale up or down depending on your needs.

Printed on an A1 mini with 0.4mm nozzle on 0.2mm strength setting with Bambu PLA.