Simple toys often leave the most memorable and impactful marks on children's play experiences. It's heartening to see how so many of the tried-and-true classics are still being recommended by parents.
A mini toolset sounds like a lovely idea, especially if it encourages helping out and fostering a sense of utility - teaching kids everyday skills is so important, giving them confidence, and preparing them for real-life situations is a wonderful gift!
You're right about the difficulty of picking just one or two things - the struggle is real! But then again, birthdays come every year, so there's always another opportunity to give another carefully chosen toy
And with so many great recommendations here, it's going to be a fun process!