Swiss Army knife in a credit-card shape

This small, flat, semi-translucent plastic card contains a sharp blade, an even sharper pair of scissors, a file, a tweezers, a toothpick, and a pen. They all slide into the card, and come free of it for independent use. The whole kit is the size of a credit card, and about three times as thick. It lays flat in my pocket and weighs very little. I use it daily. It prompts a smile most every time I do, and it’s a good conversation piece. Highly recommended and undeservedly under-popular. -- Gru

Victorinox SwissCard ($25)