Oh I've got a million of these!
I cut up old athletic socks and sew them into cleaning cloths.
I turn off the water between wetting my hands, soaping them up and rinsing.
I'll keep a $5 item in my Amazon cart for months waiting for the price to drop before I buy it.
Like I said, I really have a ton of these. Each one in and of itself may save only a little, but all together as a lifestyle, we do pretty well on one income because of these habits.
Ha, you sound like you are ready to be off the grid/ready for an apocalyptic event, and I mean that in a positive way :)
I can relate to some of the things in this thread. I have tried re-using ziplocks.. it does seem really wasteful to use them once. I found it hard to keep up with IE they end up in my bag or in my desk at work which is probably not very sanitary. I try and go with glass tupper ware containers now days when I can and just use less bags all together.
Here is a good one for you water savers...
I usually have a shot glass in the bathroom for brushing teeth. I fill it up and then dip my brush in it, brush teeth, then rinse with the water. I don't know what $ it might save, but when you thinking of just running water on your brush.. you only need a few drops to wet it.. and then if you drink from the faucet like I do if I don't use the glass... it's probably using about 1/10 of the water to use the glass vs. the old way. When thinking of how much water actually just runs down your sink.. water that's perfectly good that could be used for watering plants outside (or drinking!).. it seems the way we use water now is extermely wasteful and will change in the future.
I'm starting to try and just run a little water to wet my hands, then wash, then rinse. That water just running on your hands isn't really doing a lot when you think about it!
I do keep a 'rag bag' of old socks or underwear to use for cleaning stuff.
I got this from my dad, when the ketchup is low to run a tiny bit of hot water in the bottle and shake it up really good and like magic you have more ketchup.
Sometimes I try and rip a tiny piece of a paper towel off because I just want to wipe up a spec of something.. but it isn't big enough.. so I go back and I'm ripping off a slightly bigger piece of paper towel... it can feel ridiculous sometimes like OP said.