Likely just double sided tape. That would gather dust where exposed, (not stuck to wires, bit) though. As I found out from doing the same thing with a super long lamp cable, in my bathroom, where we only had a heatlamp, and that sucked in summer. But also the power point was in an awkward place, so I dangled a lamp from the ceiling, but after taking it down, and being too lazy to remove the tape, now it’s fly catching tape.
Likely just double sided tape. That would gather dust where exposed, (not stuck to wires, bit) though. As I found out from doing the same thing with a super long lamp cable, in my bathroom, where we only had a heatlamp, and that sucked in summer. But also the power point was in an awkward place, so I dangled a lamp from the ceiling, but after taking it down, and being too lazy to remove the tape, now it’s fly catching tape.