Yet another Christmas (or string of lights) Light Hook for Gutters, this is designed for a 112mm gutter used primarly in the UK but should work elsewhere, just try it. This is 5mm thick but I have tried reducing the height in Cura to 3mm and 4mm and both work fine. Print as single or multiples, up to you. Easy to hang and gravity holds the cable in, no pinching of wire. Enjoy.

Update: I have made a revised version which has tabs in which to help with the problem of the wind and is also 1mm smaller gap.