Get your stuff off the tables & shelves & on to the wall - I use this mostly for cables, especially practical for a couple of small ones, too short or otherwise unsuited for just hanging on a peg or whatever.
If you'll be using it for thicker bundles of stuff, maybe make the business end of the hook a bit longer so the coils don't drop out (not much of a problem for me because I still prefer to put a velcro strip on my coiled cables, even when using this hook).
I cannibalised the spring from a cheap 1" hardware store glue clamp & the screw is M3 x 25mm.
Note that I also included an image showing how I prefer to print the clamp part; I find it difficult to get it to look nice lying on the side, I can never get the support to my satisfaction. Your mileage may vary.
The author marked this model as their own original creation.