Didnt realize this was about photography and was wondering what wine bottle extension tubes are.

Extension tubes are fun. I forgot whether I used an extension tube or a reverse adapter for this one:

That's a millimeter per black line in the background.

Extension tubes are pretty fun, but I didn't like the light falloff and got annoyed with the manual focus when trying to photograph things that move a little bit such as living ants or the iris of people's eyeballs. My very first intro to macro was reverse-lens photography where you simply use your lens backwards.

Eventually for macro without a macro lens, I settled on a stack of lens filter step up/step down adapters and one male-to-male filter adapter to reverse-mount my 50mm lens onto any other lens of choice. I also got a body mount to filter adapter so that I could protect the back glass with a UV filter and add a macro ring flash. This whole setup gives you at least a modicum of autofocus, which helps tremendously. Granted, you end up with some extreme fisheye and barreling around the edges of your image, which means you'll lose some fidelity cropping out the garbage.

None of this is necessarily advise anyone should take, just offering you some more ideas to have fun with. Also, check out macro rack focus rigs, those are crazy-fun. This was also a pretty incredible story around the time I started really getting into macro, you might get some rig ideas with today's more easily accessible technology.

They also make screw on macro lenses.

If you use the same mm of tubes as you do for your lens then you double the magnification. Meaning if you put 50mm worth of tubes on a 50mm lens you will get 2x as much zoom. This is a great way to get to 1:1 macro scales.