Stocking presents for teenagers

[pilates]

A girl 16 and boy 13
Any ideas please?

Boy -
some of that 'Thinking Putty'
usual socks, pants, toiletries
wallet ninja
I'm putting a Steam gift card in my boys
Mug with those mug cake mixes (an idea I got from here last year)
I got my boys this (smallest remote controlled car) because you just know, no matter how old they are they love to play!

Oh and a clip on phone microscope

Thanks, Gherkin! Will be ordering some tomorrow.