The simple innovations are often the best! A thermal seat, made of styrofoam will always feel warm no matter what the temperature is in the room. This is great aid especially if you are using the outhouse during the winter.
In Pikkuvihreä selection you can find insulated seats for traditional outhouses, separating toilets as well as thermal stickers to plastic toilet seats. Pikkuvihreä own model of the thermal seat has a board under the insulated seat, which will help the assembly to various shapes of outhouse holes.
A thermal seat should be washed with a mild detergent and water regularly to keep it hygienic for the users. It is also good idea to change the styrofoam seat whenever it becomes worn out.