Another type is Palmer which specializes in holiday peanut butter cups. There are various forms that the peanut butter cups take for the different seasons. Each holiday has a different color of foil for the season. They can also come in different shapes such as Christmas trees during holiday seasons.
In recent years Reese's has experimented with different types of peanut butter cups. Some variations have been the White Chocolate Peanut Butter Cup, Creamy Peanut Butter Cup, Chocolate/Chocolate Cup, and Banana Peanut Butter in a chocolate cup sold as the Elvis Special Edition (all by Reese's).