(Almost) Invisible Skadis hook

Most design seems to have the “hook” part further down, leaving the part that goes into the board visible. I put the hook at the top and then whatever hangs there usually hides the bottom part of the hook so it's close to invisible

Update(2024-10-18): Made it a little bit less tight/snug per user feedback and updated the design a bit so even though it's not as tight it still sits pretty well. Also added more lengths, now comes in 10-50mm with 5mm increments!