That key holder is a clever idea. Marylee

hmmmm - link isn't working for me

It didn't work for me either, so I shortened the address to the main site, and was told I don't have access.
Kathy

Sorry it's taken me awhile to get back to this. We had this big storm go through and my internet connection always goes out when the weather's bad.
I can't access the original link either so I found another that's similar. The only difference is the number of spark plugs. The original link had 4-5 spark plugs. I think it was meant to be a key hanger.
See if this link works for you.

Here is a link that might be useful: Spark plug coat hanger

That is a good idea.

Just be sure to hang it high enough or in a place that no one will bump it or back into it. I had some hangers that were long wooden beads with a nail through the hole in my long narrow closet. I backed up too far into the nail head. Oh it hurt! I took them off the lower area after that.

Kathy

I could see this idea as being taken outside to build some cool garden art stuff, something round with these around the edge....hmmm

I have 1 or 2 old spark plugs that I was thinking of making into bugs. It's just another idea to consider. - Laura

That is a great site- apparently in foreign country but they do tell what they did in English. The on each side take you to more recycled stuff & the corks make a great bulletin board, idea 228 I think. Go