MIL is a muslim so can't give us money to invest and earn interest on directly. So she wants us to buy something as the start of some sort of collection - something that can be added to in the future and will eventually be worth something. She's left it to us to work out what on earth that could be!
I have no desire to burden DD with clutter from such an early age but need to respect MIL's wishes. I know she can ill afford £50 and the thought is a very kind one. Any ideas??