The Doormat changes your spawn location when you "enter" your base. No longer do you appear at the edge of your base map, but wherever you placed the Doormat.
Doormats can only be placed on the ground. A maximum of 1 can be placed and it takes up a 1 × 1 grid space.
Setting base spawn
Doormats can be used to set your spawn in your base. Instead of spawning near the edge, you spawn on the Doormat.