When I was growing up, our family's post-Thanksgiving tradition was untangling the Christmas lights and watching dad hunt down and replace the burnt-out bulbs. It was good for a few hours of entertainment.
Thankfully, LED Christmas lights have mostly fixed the burnt-out bulb problem, but there's still those pesky tangles. No matter how carefully you put away the lights, next year you're still in for a mess.
That's why there's a Kickstarter for a product called Aura. It's the first set of wireless Christmas lights for a Christmas tree. No, really.
There are two parts, the power ring and the lights themselves. The lights are bright LEDs and actually look like round Christmas ornaments.
You put the power ring at the base of the tree - or in the middle for taller trees - where it throws out a low-power, highly tuned magnetic field. Placing the ornaments on the tree moves them into the field and they light up. You can control the lights with a remote or mobile app.