To the untrained eye this probably looks like a very ordinary child's tricycle with a useful handle in the back. Up until recently, we thought so, too.
Then one day Jake was riding in the back bucket while Abby pedaled, and the bucket popped out.
I explained to Jake that Abby's bike is actually a dump truck. Instantly the bike went from being a boring little kid bike to a very cool piece of construction machinery. No local dirt mound has been the same since. Neither has our sidewalk.