Party gift

[Sux2buthen]

My son has been invited to his first ever birthday party. (A non milestone really but I'm excited for him).
Anyway, the child is going to be 4 and I have no clue what kind of inexpensive but not crap present to get. Obviously it would be weird to get something too big but also don't want to be know forever as the crap present family .
I know nothing about this child if that helps!
Any suggestions would be great thanks

[NerrSnerr]

I usually get a craft set, a book, or a colouring/ activity book with pens/ pencil crayons. I tend to spend £5-£10 depending on how good friend they are.