If your floaters get stuck on your skimmer, give this a try. Doesn't use much filament (recommend PETG for flexibility vs PLA). I could have increased the circulation/swirl speed to push them along by adjusting the discharge nozzle, but then the skimmer would be less efficient.
The inner ring is designed as a press-fit since the part of the floater it slides on is a tapered diameter.
Fits this model of floating chemical dispenser if they haven't changed the design.
https://www.walmart.com/ip/Mainstays-7-Swimming-Pool-Blue-and-White-Collapsible-Floating-Chlorine-Tablet-Dispenser/430602896
The author marked this model as their own original creation.