|>>|| No. 5620
I was thinking just the other day that I should start storing my receipts properly, in case I ever need to return anything. Most just end up crumpled in my pockets, and occasionally get turned out and scattered around my bedroom floor.
You should really keep a hold of receipts for as long as the warranties on the products last.
If you want to do something useful you could buy a camping stove and burn them to make a cup of tea.
If you're a smoker you could use them to roll your own filters.
That's about all I can think of.