I own an outdoor power equipment dealership. Upon deciding to decorate for Christmas for the first time I wanted to have a unique Christmas tree. All of the ornaments on the tree were bad parts taken off of units. I did not use any good parts for this tree. I did this for 2 reasons. First it makes the cost almost nothing, second it stops the parts from going in the trash.
Step 1: Spark Plug Ornament
We took Spark Plugs and painted them gold. We then closed the spark plug gap with a jump ring and used ribbon to hang it on the tree.