When we tested this construction learning kit, our pint-size volunteers spent hours honing their mechanical reasoning and creativity skills while building an endless series of crazy creatures. Using motorized gears, springs, flashing lights, glow-in-the-dark eyes, and chomping teeth, kids can construct any of four suggested Wigglers or stretch their imaginations inventing new ones.

• Includes: hand control and 130 color-coded pieces
• Required: 3 AA batteries, not included
• Ages 5 and up