Stocking fillers for 13 year olds

[EllaPaella]

Looking for inspiration for stocking fillers for my 13 year old DS..
The 8 year old and 21 year old are far easier to compile a stocking for for some reason.
He likes snow boarding, mountain biking and gaming.
What are you all outting in your younger teenage DS stockings?

I recommend this for a mountain biker...

Ass saver - keeps the mud and water spraying up their bum and back! The name gets a giggle too!

Not really stocking filler price sadly, but Sealskinz waterproof socks also great!

Other ideas...
Puncture repair kit
Keyboard cleaner putty
Gamer goo
Gaming voucher
Touch screen gloves
Gaming socks
Gaming mug
Snood
Nice shower gel
Muscle soak
Nice pen set
Metallic outline pens
Highlighters
Pencil case
Mug cake mix
Marshmallow toasting fork
Chocolate drinking straws
Sweets/chocs

Earbud case
Bottle of Prime
UNO Flip card game
Beanie hat
Hand warmers
Joke book
Chop sticks
Magazine

T shirt from Red Bubble. You can pick from about a million slogans on them. My son's love them.

Torch

Lego keyring

Nice shower gel

After shave

Electric shaver

Mug fill it with chocolates

Science stencil to save trying to draw Bunson Burners and test tubes by hand.

Chemistry top trumps

DS uses his bike multi tool all the time.
Something like this one:
multi tool

Thank you everyone, some great suggestions. I have managed to get a bottle of 'rare find' Prime (🙄) but some other great ideas here, thank you!

Bike multi-tool and the seal skinz socks are great ideas 👌

American sweets
Spare phone cables
Socks
Pants
Pop vinyl figure
Card game (uno, travel articulate, exploding kittens)
Voucher for Greggs/Costa/Starbucks/cinema
Toiletries
Phone holder that attaches to desk (google gooseneck phone holder)
Rubix cube
Coloured popcorn for popcorn maker (if you have one)
Sachets of hot chocolate
New Nike gloves or beanie
T-shirt rolled up
Slipper socks
Magnetic wallet to attach to phone
Chocolate coins and a satsuma!
Bluetooth colour Hue lightbulb for bedroom

Not all stocking filler prices, but I tend to do a mix of cheap and not so cheap but small things in the stocking.

Here for ideas.

Rubix cube
Emergency battery pack to top Phone up if needed.

A beanie hat with a light in it