Don't let looks fool you. Assembling a shiny freewheeling toy train like this one is a cinch -- the pieces are simply stuck or clipped together. Chances are, most of the parts you'll need for this model-making project are ready and waiting in your recycling bin.
Using pieces of double-sided foam tape, stick together assorted cans to create an engine and several cargo cars. For example, the engine pictured here was fashioned from a tea tin set on its side with smaller tins taped to the top and front. A twist-off bottle cap was added for a headlight, and a disposable mini tart pan folded in half and turned upside down was taped in place to serve as a cowcatcher.
Attach 2 sets of wheels to each car. First, use a hammer and nail to make a hole in the center of each bottle cap (A); you'll need a larger and a smaller cap to make each wheel. Using small squares of double-sided tape, stick metal washers to the sides of the cars where the wheels will go, making sure that the washer holes remain uncovered (B).
For each axle, straighten one end of a paper clip and thread it through the washer hole. Slip on a larger bottle cap (inside facing out), followed by a smaller cap (inside facing in), and bend the tip of the paper clip to hold them on (C). Now duct-tape the opposite end of the paper clip to the bottom of your car, positioning it so that the wheel turns freely.
To connect the finished cars, simply attach a bulldog clip to the back of each one and a suction cup hook to the front, then hook them together (D).