Sorry to be the buzzkill, but if there's nothing you want then why waste money for the sake of it?
Or what about a £50 donation, in your name, to some kind of wildlife/conservation charity?
But don't waste money for the sake of it when there are, literally, millions who can't afford to eat.
I get that it's that time of year and people like to buy something for someone they love, so why not just spend a tenner or something? And save the rest or give it to a cause dear to your heart.
OK, sorry about that. As you were...