Refillable Toothpaste Tubes News Today

This . ounce, thumbnail-sized device plugs into a smartphone's charging port and delivers a calculated pulse of heat that stops bug bites from itching--sometimes for good. It's controlled by a free downloadable app that lets users adjust the heat's intensity and duration, and testers agree: It actually works.

The smallest gifts are sometimes the most useful. Snag one of these three-ounce-or-less upgrades for the hiker on your list.

Take a peek at emerging products from the sometimes cutting-edge, sometimes quirky world of gear design. Explore the grid or click through for a slideshow.