At the intersection of do-it-yourself and playful childhood nostalgia, you'll find the Hot Wheels Car Maker ($40). Just turn on the press, melt down the wax, and form a custom car of your choice using the included molds and rolling bases. Once you're done, you can add decals, stage elaborate race scenes, or just roll them across your kitchen floor. Extend its capability with optional add-ons, including hot rod molds, muscle car molds, and additional wax colors. The only things standing between you and your dream (toy) car are a little bit of imagination, time, and the ability to act like a kid again.