I sometimes use something similar (white, and no octopus theme) for drying RC prints.
I've had it and used it for ten years or so.
It requires a bit more dexterity than some solutions, because handling one of the clips can end up causing the others to go up or down.
As I understand it, they are designed for underwear - probably best not to mix your film and your unmentionables.
Mine folds down very flat, so it is probably a bit better for those of us who need to pack up and store our darkroom stuff between each session. I think I still see them at Dollar stores.