Subspace. Topspace. Backspace.
I had this ring made for me by an American company that specialises in such things. It’s the backspace key from an old typewriter on a silver band. I chose it because it suits me perfectly; I’m a writer, and I make a lot of spelling mistakes.
Also I like the idea that if I get in a fight, the last thing my opponent sees will be the words ‘BACK SPACE’ before everything fades to black.