We are still using up these little packets of jam that my parents bought a catering pack of many years ago for their self-catering rental house (back when they started they used to leave a full cooked meal ready for guests when they arrived, later on it was just milk, bread, butter, and some cereals and jams).

They are now quite a few years out of date and thus getting a bit rubbery, but my dad won't throw them away. But every time I look at them I remember the old "Fly Fishing by J R Hartley" Yellow Pages TV advert (which I see they have since updated and remade).