I know this sounds silly,but playdough are doing a "50th Birthday" special edition pack at the moment(I've seen it a few places) With 50 little tubs in a box shaped like a b'day cake.I bought one to use in party bags £5. So 10P each. I thought they'd make a good silly present for a 50 year old,but couldn't think of any one I know.Everyone loves fiddling with playdough, or come in handy when young guests visit.
Be careful when converting points to Cineworld
...and it's essentially NO FEE
Via its Advent calendar (norm £59 delivered)