They need a:

Portable mini fridge!

Be a cool relative / friend / total hero with this gift! I bought the pink one and the blue one for each of my teenaged nieces. They like to keep their makeup in it (who knew?! It’s a thing!), plus a couple cans of pop and a snack. Then they don’t have to leave their room to see their parents (ugh, thank god! Total lifesaver)! 😂 I’ve also heard it can be unplugged and keep hot food warm for an hour or so. Very versatile. Comes in many colours, even a black dry-erase version!