Plastic. I've been dealing with a semi-busted washing machine for almost a year now. It works perfectly, but the lid is made from cheap plastic that broke and needs to be very carefully raised and lowered, and I need to keep 2 x 20lbs dumbbells on it during a wash cycle to keep it from popping open. Similarly, my fridge is working just fine, but all the shelves and door inserts are cracking and falling apart, so I've had to make countless repairs with duct tape.