Stocking fillers for teenage boys?

[GivingUpScouting]

I'm stuck! Apart from socks and sweets, I can't think of anything. What are you getting yours?

My teenage daughter has new fun headphones, a splitter (so she and friend can listen to her music), a funko bobble head, plus the usual undies/body spray/american chocs

smellies.
bakedin.co.uk cake in a mug pots ( he likes a cake in a cup)
choc
maybe a book ( popular science ones)- haven't chosen one yet
a nice pen.

considering a small rocketbook notebook thingy getrocketbook.co.uk/ but will need to see how budget goes
and some new tennis balls!

Spare charging cable
Twisters for his army trousers
SD card for his camera
Pack of playing cards
Bailey's miniature

Super dry smellies - Boots
An online Christmas puzzle/quiz/jig-saw type thing.
A lottery card.
Star Wars electric toothbrush (saw these in Tesco(?) today).
Vouchers for shops, Amazon, river island etc
Temporary tattoos - for a bit of fun?