Kong Plugs Plus

Freeze liquids into your Kong and Kong-like dog toys without making a mess!

Inspired by https://www.thingiverse.com/thing:1978766 but modeled from scratch, with some improvements:

- plug lengths match the thickness of the rubber on the dog toys I have available
- the inset hole is shallower and tapered so that frozen liquids don't stick as hard
- taller handle is easier to grab
- wider base so the plugs don't get sucked into the Kong when freezing liquid broth
- gentler knurling is eas