The SteriPen JourneyLCD (which doesn’t at all sound like a permanent male contraception device) uses high-frequency ultra-violet light to kill off all those nasty bugs in your water. It can take a little bit of time to clean all the water, but thankfully the device features an LCD screen which comes up with a smiley face when your water is safe to drink.
Costing just US$130, and weighing about 140 grams, the SteriPen isn’t meant to replace filtration – if your water isn’t clear to begin with, the UV light won’t help much. But it does make it easy to ensure that your overseas holiday doesn’t involve a heap of snapshots of you with your pants down, crying like a baby.