They already have ( and don't use) :
-any board games you could name
-puzzles and 3D puzzles
watches
phones
choice of Gaming eqpt and headphones etc
Books galore and I've bought seasonal (Guinness book, Ripleys) and a novel each already.
Stationary.
They had crafty things for their birthdays and have various remote control cars, drones and kites etc.
Shit. I have spoilt kids.
Shall I just buy them a pair of gloves and a load of Fortnite/Roblox/Minecraft vouchers....?