Skintimate. When we move into a new place, the very first thing we replace is the toilet seat.
In the past we've always chosen a simple, inexpensive white plastic hardware store model, almost as a reflex. But it occurs now that all these replacement hunks of plastic become landfill, and stay with us 'til kingdom come. As old-timey as it can look, next time we will go with wood, specificaly bamboo, for its sustainability.
You can find bamboo toilet seats in all shapes and sizes. They're made from triple laminated bamboo slats that have been treated with intensive heat & pressure to make them durable. Which means you can take it with you when you move, and at $64, you might want to.