Toilet brush holder, with space for weight, 65mm diameter. Consists of three parts, you can choose colors to match your interior. For tightness, it is better to glue the parts together.
The bottom part needs to be printed with supports due to the cutout for the weight
As a weight, you can use any metal part no more than 1.5 cm in height and less than 8 cm in diameter; in my case, it would be a magnet from an old TV, but a store-bought magnet is also a suitable alternative.
Part of a set.
https://www.printables.com/model/1356166-bathroom-set
https://www.printables.com/model/1356151-soap-stand-with-water-drainage-grid
The author marked this model as their own original creation.