Others (for odd-size, severely damaged holes) are fat, cone-shaped synthetic rubber plugs larger than the drain-plug hole. You force a special rod into an opening in the cone, ...

"The dishwasher drain on a garbage disposal can be blocked off by using a conical rubber plug that is ¾ inch wide; you can simply push the rubber plug into the drain hole [on the inner sidewall ...

And when you reach the bottom of your cone, you'll have a delicious, ice cream-soaked marshmallow waiting for you as a bonus treat. Creating an edible seal for melted ice cream isn't a new concept.