giving away business ideasOn long winter nights, losing sight of your little adventurous dude can be pretty unnerving. LED collars are a solution to make anything with a neck visible in the dark, but they are prone to shutting off without a warning if they run out of juice.
One way of solving is adding a motion-powered charger to the collar, so the movement of your pet generates the electricity to light up the collar. Aaand this has already been invented, but the company seems to have vanished after gathering some following.