Enough hanging led strings pinned by nylon straps! Or expensive aluminium profiles you have to drill and screw. Who buys 220v lamps? —Only super rich oligarkhs sucking for worksman blood money!
What about easy clip-on printed profile for quite common wardrobe system with zero post-printing work? Just print it, clip it on, insert led string. And interconnection cap can be glued with hot-glue.
Compatible with 6 mm rails and 10 mm led strings.
Profile can be easily broken for perfect length.
I print it like column, 2 parts at the same time on raft and 0.5 mm nozzle.