Tire Coasters of course. These things are awesome. They are nice rubber compound and very life like except for the small bit.

This also happens to be day 19 of my Advent beer calendar and they work perfectly.

Thank Reddit Secret Santa!!! I love them.

But wait there's more, found another package of Xmas socks. These are there to help me remember which is my left and which is my right foot. Just need to look and see what they do.