Keep gadgets high and dry: Created by a scuba diver, Loksak, Inc.'s hermetically sealed aLoksak 'element-proof storage bags' protect smartphones, passports and other valuables from water (certified to a depth of 200 feet), snow, dust and humidity.

Loksak's translucent materials are heavier than common home-use plastic storage bags, but flexible enough that you can still operate smartphones' touch screens from inside the reusable bags. The company's Splashsak carrying cases ($16.49-$32.59) hold varying sizes of the aLoksak bags, while the fabric Shieldsak ($64.99) blocks electronic signals capable of reading or hacking your log-ons and other critical information. $7.49 for a set of three at loksak.com