"The carefully split the wire part" in many places has me concerned about electric shock. Is this wiring upto code in the U.S? Also, the comment at the end to use "hooks" beats the whole point of using magnets.
Haha, code. IIRC, Christmas lights have their own exception in the NEC, as the things are wildly unsafe by general NEC standards. For example, nothing stops you from plugging a space heater into the outlet at the end of a string. But relax, it's Christmas! Having said that, OP's lights are built a bit more solid because they look like the 120V parallel-wired style, rather than the series wired tiny lights. I'd be com…
I remember https://i.imgur.com/vKbfzEs.jpg from my childhood. Small metal clips to attach real candles to the Christmas tree. 20-50 open flame candles on a dried out Spruce, one of the best fire starters possible.