Ok, so it's both steampunk and a little Harry Potter, with that winged key. That's double the geeky goodness!
(ZOMG - steampunk Harry Potter! Why have I not thought of this as a cosplay option before?!)
This was more of a quick customization craft than anything, because I started with this:
I brought it home and cracked open my charm stash. The key and wing sets are from Wal-Mart:
I snipped off the wing rings, and glued everything down with a gel super glue:
(I also switched to a different key charm.)
To jazz up the top ribbon portion, I used two jewel brads to hang a short length of silver chain:
I just cut a slit in the ribbon with a utility blade to slide the brads through. Super easy.
These are the brads I used, and you can see how I opened them up & snipped the one side on the back. (The ribbon is stained because I was experimenting with painting over the stripes with markers to change the colors. The ink tends to bleed, though, so I just left the ribbon as-is.)
And that's it! There are tons of possibilities with this one, whether you wear it as jewelry or as a cosplay accessory, so just use what you have, and have fun with it!