I bought this for my 9 year old nephew for Christmas who's quite technically minded and loves taking things to pieces to see how they work (then someone has to figure out how to put them back together again once he's finished with them!). He thought it was fantastic and proudly showed it off to all the assembled relatives at the new year. He loves knowing how things work and was really proud he'd made it himself (with a little help from his dad) and spent ages patiently explaining to all the relatives how it worked. The instructions are clear and easy to follow, even for a 9 year old, and has helped him gain an understanding of how electric motors can be used. Two months on he still loves it and it's taken pride of place amongst his collection of "inventions" as he calls the things he makes. My nephew's summary of it as a gift was, "It's cool! I can't wait to go back to school and tell everybody what I made!"