BuBL Space

It's totally a tease, but the BuBL Space, a handheld cellphone jammer that's supposed to create a cellphone conversation-free zone around you of three meters, isn't actually for sale. Though they definitely do exist, cellphone jammers aren't legal for sale in most countries and when you click "Buy Now" it's revealed it's part of some high-minded art project from a couple of years ago intended to "evoke discussion about public and private space."

[Via textually.org]