I’ll go first. After your turn the water off in the shower but before you get out, use your hands to wipe off any standing water on your body. Maybe even give your legs a bit of a shake. This way, you won’t drip nearly as much when you get out, keeping the floor and your towel drier.
Go to a hardware store, buy multiple packs of microfiber so you have multiple colors, assign a color to a specific task (blue = bathroom, grey = kitchen, orange = car detailing) and liberate yourselves from paper towels.
If you wash them in cool water with little detergent and some vinegar, dry on low without fabric softener, they’ll remain absorbent and streak-free for a long ass time. As they go bad (burned from wiping down a hot oven top etc), cut them in half and use them for rags for ‘greasy jobs’ (you’ll know which is which because they’re cut in half)
I would modify that to say use microfiber for things you really need microfiber for (e.g. cleaning glass or waxing cars, where you really need it to be lint-free and non-scratching) and get bulk packs of cotton bar towels from a restaurant supply store or Costco business center for everything else. This minimizes the release of microplastics.
Surgical cloths. They have to be disposed of if they were even in the operating room. They still sanitize them though. You can probably find them for free, but if you pay any money it will be incredibly cheap. They are very low-lint and have a coarse texture that makes them perfect for cleaning.