Any guy who shaves with some regularity knows that the inconvenience of shaving is nearly matched by the ridiculous prices many blades command nowadays. Compatible with any of the major cartridge-style razors on the market today (mach-3, fusion, pro-glide, etc.), this ingenious device uses a silicon plate to instantly clean and sharper blades, extending their life for up to 150 shaves depending on usage. Although admittedly we haven’t had the chance to put this device to the test, online reviews seem overwhelmingly positive. Available at Mankind.