convert any pair of pants or a belt into a holder. Simple. Works perfect. Surprisingly durable too, though supposed to be a disposable item.

I recommend PLA or Nylon.
PLA is nature friendly. Made from plants. And recycling friendly. Tends to break easy, though. But it’s a cheap, disposable item you can throw away with your last can in a six-pack…
Nylon is much more durable. Good luck breaking that one. Try not to lose it.
Manufacturing takes a few hours for about 10 units. Can make 20 can holders in about 3h. Depending on how many things break down in the printer…
I share the drawing in https://www.cgtrader.com/preview-3d-model/3780547 if you want to try printing these things yourself, but be warned - it won’t get much cheaper.
3D printing service providers charge 2x what I do (Shapeways asks 7eur, I do it for 3eur).
If you have a can that is different, or a bottle of special kind - I can custom fit things for it. For extra charge. Would take about 20eur for that time. and then between 2 to 3 eur for every printed one.