Remembrances are completely pointless.

So many things from the Harry Potter universe make us wish they were real. Are you serious about flying broomsticks? We’d sell our cars in a heartbeat if it meant looking like a Quidditch star on our way to work every day.
Hermione’s never-ending bag? Absolutely fantastic . Other magical artefacts, on the other hand, are less appealing. Take, for example, the Remembrall. What is the point of that? It’s pointless to have an item that illuminates when you’ve forgotten something. We have no way of knowing what we’ve forgotten.