jelly you've got with PBJs, you kind of have to. When I got older and bought my own foods, tried different jams and I liked it a lot better! Mom did used to make her own freezer jam...strawberry and other fruits and those were always especially good! I never touched grape again!
DH eats a variety of jams on his PBJs but he likes blackberry most and boysenberry and strawberry. I buy a lot of different kinds...I like raspberry, but I don't eat a lot of things to put jam on.