Perhaps my favorite find at the fair, Berg Toys, a company known for its amazing go-karts, has introduced a line of constructable bikes. The Dutch-designed MOOV, which comes in three different sized kits, encourages tots to build and then use their creations. Using color-coded rings, wheels, and axles, children can create bikes, scooters, lifts, and more. Take the item apart and remodel as often as you like, it's made for that! At $360 the kits are pricey, but given the number of items they convert to, they're less expensive than buying one of each!