Ideas for 16 year old boy please - budget £15

[Fandangoes]

We have a 16 year old male apprentice in my team at work. The rest of the team are women I am friendly with and I have bought them bottles of alcohol. Anybody got any idea what I can get for the apprentice? Please???
I don't know him well enough yet to even know of any hobbies he might have! I've not seen him eat sweets!

Some chocolates ?
Neutral male bodycare sets like Nivea?
I think I saw some bottles of Mocktail drink last time I was at the supermarket ? (It will be less than £20 but would match the others.
Does he like hot drinks ? Definitely saw some coffee and tea sets.

Does any of your other coworkers know him a little better? You could give him a t-shirt that relates to something that interest him. Though I believe that football t-shirts cost more than £15.
There are a lot of funny science t-shirts. Like the one that says " Schrödinger's cat is" and the next word looks like it says "dead" and "alive" at the same time.

Gift card for Costa or Subway...

ooh the giftcard might be a good shout actually - so simple but I never thought of that. Thank you!