When it comes to finding great educational toys and games to play with niece and nephews, of my favorite companies is Educational Insights. They have a large variety of products for every age group and at every price point.
I was lucky to try another one of the wonderful products:
Design and Drill Socket to Me:
Design a boat, robot, race car, or rocket with a real, working socket wrench and rugged bolts – then play with your creations! Endless construction fun for preschoolers.
This is a great way to encourage kids fine motor skills and creativity. The wrench is perfect kid sized and easy to use. My nephew spent several hours putting in the bolts and taking them out creating his designs. I think his favorite was the Robot! I love that the screws are a range of colors so that he can change up his design every time!