PB & Vanilla Ice Cream
Vanilla ice cream was weird on bread, but I liked the taste. Not my favorite combo, but the flavor was good and it was very creamy.
In conclusion, peanut butter is fine on its own, but who wants just 'fine'? If you're taking the time to cook something like a peanut butter sandwich (yes, this constitutes cooking and don't let anyone shame you into thinking you're NOT a chef) then jazz it up a little. If that Peanut Butter & Co. guy can build a business off of endless combos then you have no excuse to let your peanut butter go naked ever again. Just don't clothe it in canned pumpkin.
Mara Montalbano is Thrillist's Official Taste Tester and she has a theory that whenever you eat a plain peanut butter sandwich, Elvis cries. Follow her here.