Drop this retrofit kit into the bulb socket of your $2 drugstore C- or D-cell torch, and turn it into an LED hand lamp with up to 10 times the battery life. Nite IzeLED Upgrade Kit $10;niteize.com
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Bad cell reception indoors? Hang the Network Access Unit in a window, and put the repeater box where the signal is worst. It´ll spread good reception over 2,500 square feet. Spotwave Zen 1900 $400;spotwave.com
Unexplained jitters when tackling easy tap-ins have befallen even the most legendary pros. Now, a group of scientists hopes to reveal which sections of the brain are responsible for choking