Breathalyzer Pen
This is a pretty neat form for an old function. For $35.91, you can get the alcohol breath test pen. It’s 11 x 1.5 cm and has a simple LED that indicates if you’re over the limit.
I hesitate to buy it though, as the level at which the LED turns red doesn’t seem to be user-customizable. Legal limits vary by country, state, and even local ordinance. However, if you need a gadget to confirm your inability to drive, then you probably shouldn’t be behind the wheel regardless.
