LEGO(R) Classic Creative Vehicles - 11036

The easy-to-follow instructions meant my 6-year-old could build the police car on his own, and he's already swapping

My 5-year-old spent a solid hour swapping the wheels and roof pieces to turn the police car into some kind of ice-cream patrol hybrid. The instructions are simple enough that he barely needed me, which is rare for a set with this many small parts.

The ice-cream truck is the first thing my daughter wanted to make, and she got it done in maybe ten minutes with the picture instructions. She's already rebuilt it into some kind of rocket car, which is the whole point of a set like this.