Materials:
low temp hot glue gun
ribbons or yarn for hanging
1 roll of lifesavers (cylinder about 3 1/2 inches long)
1 small package of gum (3" x 3/4" x 3/8")
4 round wrapped candies (i used peppermints)
1 hershey's kiss (this is by far the best shape i've found)
1 large rectangular caramel like candy - about 1" x 1" x 3/4"
1 mini chocolate bar (1 1/2" x 1" x 3/8")
a creative imagination

Directions:
Glue the lifesavers roll to the gum package, letting the lifesaver roll stick over at both ends.
Glue the peppermints to the lower sides for wheels.
Push the Sundae/caramel onto the lifesaver body to make the cab of the engine, so that it will glue on better. Glue.
Cut the paper off the top of the Hershey's Kiss, and flatten the point a bit by pushing it against the table. Put a good sized glob of hot glue on the tip, and then glue it to the lifesaver roll.
Glue the little chocolate bar on top of the cab for the roof.