Why we like it:
The Gears! Gears! Gears! deluxe building kit is a 100-piece set of 26 square pillars, a crank handle, 21 six-way axles, an activity guide, and 46 brightly colored gears in red, orange, green, blue, and purple.
The uniformly sized plastic gears can smoothly slip onto the pegs on the square bases and then linked together in a wild combination of ways. The extenders and pillars continue to expand the possibilities up, out, and even sideways dimensionally.
With just how many things you can build, construct, and create, this is easily one of the best skill-building toys for children ages 3 to 5.