The Lounger
Even Grinders need to kick back after a hard day hacking, and what better way than in a floating chair:

“British company Hoverit, Ltd., has recently introduced “The Lounger,” a chair that defies gravity by hovering a few inches above its base. The Lounger uses permanent magnets in the chair and base to lift the chair in the air.”

Just make sure you don’t have keys/coins/electronics on you.
…And absolutely no piercings.