Chosen Solution
Our Keurig machine was clogging so we watched the video for how to remove the K-cup holder and clean the needles and also replaced the water filter on the back. In the process, these small, plastic grommet-looking things fell off the machine somewhere and we cannot figure out where they belong and don’t want to toss them. Both pieces are about 1 cm in diameter and 1 cm high, but one has a hole in the center while the other is solid.
Here are the parts in question: