Stocking-fillers for 12-year-old boy

[spiderlight]

DS is nearly 12. We have his main present sorted (a drift trike) but I'm struggling to think of little things to put under the tree/in his stocking. He likes cars, Fortnite, Forza and anything to do with engineering/taking stuff apart. Any ideas?

My ds1 is 12. He has a mountain bike for his main present. We've got:
Sony headphones
Nike t-shirts X 2
Adidas cap
Fortnite book
Scooter handle grips
Fortnite light
Street football
Jigsaw
Puzzle ball
Mini voice changer
Robot ball
Chocs and sweets
Pyjamas
Boxers and socks
Pen
Emoji card game

My son wants a hydraulic robot arm and some of those wooden model kits - there are some gears and moving ones. There are also some really great electronics kits on Amazon.

Water bottle.
Beanie and gloves.

TIGER for stocking fillers!

My youngest is the same age, he is into things like Harry Potter, animé, Doctor Who, so for his stocking we have picked up a few bits themed to those (I found The Works were great for cheap little HP bits!)
Also
Sweets
Smellies,
Socks
Playing cards
Earphones
Reese's Christmas trees
Pop vinyls
I'm sure there's more but it's up in the loft so I can't exactly remember!

Chocolate/sweets
Small electronic game

www.amazon.co.uk/gp/aw/d/B000W0592C?psc=1&ref=yo_pop_mb_pd_title&tag=mumsnetforum-21

Thank you cards
Photo album with photos of them over year
Toiletries
Smartphone tripod

Haynes Manuel you can get them for a variety of stuff

Ripleys believe it or not or guineas book for world records

Earphones

Voucher for Costa / Nando's etc

Sweets
Mug
Socks
Smellies
Earbuds
Candy
Jaffa Cakes
Ball - he's had different ones like floating or magic balls
Key rings
Phone case
New charger

Fortnite socks
A PS4/Xbox voucher
Gaming magazine
Something from the gadget section of the Science Museum Shop
The boys at DS's school are all into Moon Balls
Sweets
Novelty/Designer pants
Nutella jar with a personalised label (eBay for the label)

I've also bought a bath bomb shaped like a game controller from Etsy.

Sweets/chocolates
Stationary
Socks
Smellies
Mini lego
Usb stick thing
I tunes voucher
Assemble your own wood model thing -dino or similar
Unusual chilli sauce/marmalade

Obligatory tangerine and chocolate coins

If you have a Tiger shop nearby try that for ideas

Ds stocking fillers

Griffindor badge
Bluetooth speaker
Star Wars stamps
You are awesome book and journal
Bendable bowtruckle
Stress balls
Toiletries
Football water bottle
Thumb chucks
Golf balls
PS4 skin
Fortnite hacks book
Fortnite annual