You can go to a discount store and buy a new toilet seat for about $20-$30.
I really do recommend a good quality thick hard plastic---not padded plastic
or the flimsy ones hotels use. I favored wood forever, until I had to buy
plastic one time, and I really wouldn't go back to wood. The plastic cleans
more easily. The cleaning process eventually causes the underside of a
wooden seat to deteriorate, and at that point the wood becomes more porous
and harder to clean.
I raised two sons, so I could probably be paid as an expert witness. :-)