After I found out that dumbbells are indeed quite heavy and annoying to log around while cleaning I decided I need a movable (and affordable) stand for my 3 pairs of weights, 2 of which are round.
So I got this furniture dolly from Aldi for 7 Euros and designed the 2 holders in Fusion360.
They are fixed with M4 screws, the holes are 5 mm deep, so it should fit the screwheads.
I printed them in BambuLab PLA-CF, but I feel like normal PLA would also do the job.
Also I screwed them on as far as possible outside while only using 3 of the 4 screw-holes to have space for other dumbbells in the middle of the dolly
The author marked this model as their own original creation.