We have a late teen who loves her stocking. She's had the same one so ce she was a baby & it's a bloody big felt one bought at a craft fair. It was easy to fill with cheap craft sets / toys when she was small & expensive to fill now that she's older.
I reckon we'll spend about £150 on it - makeup, perfume, toiletries, mini prosecco / cocktail, chocolate, make up brushes, fluffy socks, unusual small items for her room etc
She needs a new phone so that'll be her main gift -expensive but not hugely exciting really so I'm very likely to go a bit mad on the stocking.
Since she stopped believing in santa we've started doing stocking for me & dh too. We do each others.
I get him things like alcohol, book, nice nuts & coffee, gadgets, aftershave, nice soap, socks & any other bits & pieces I come across that he'd enjoy.
I also get him a main present & this year getting him a Sage coffee bean ginder to go with his machine.
He does my stocking & last year he filled mine with loads of loccitane products, mini champagne, my favourite chocolates & stationery.
The stocking have become one of my favourite parts of Christmas. I'll do one each for my parents if they stay with us too. The first year I did one for them they were so excited - my mother said she hadn't had one since she was a child & my father had never had one!