How to make a cool keychain

Recently I bought some Super Mario keychains to my sons.

They loved them, but didn’t understand that stupid keychain thing. And removed it so they could play with the figures.

Leaving me with all these:

To make a long story short: I had a small bag of keys from an old Grass Valley image switcher lying in my drawer. And got an idea. Dremel-time:

And ta-daaa:

Of course the keys regarding chroma keying are extra cool as keychains:

…and if you don’t have such keys you can use keys from another keyboard or something else entirely:

So there you are. Trendy and environmentally friendly use of old junk.

How to make a cool keychain