One trick that I know works is to place cup holders at strategic places along your walls and use that to keep the O2 hose off the floor, away from animals and you feet. It also keeps it from kinking, because you straightening it out. Another trick is to place it in a towel and microwave for about 20 seconds, then straighten it out along the floor.

On amazon its called 3/8ths inch wire loom, I bought one last week it fits around your oxygen tube and keeps it from kinking , keeps pets from biting on it ( I have a cat ) they have 25, 50, or 100 feet lengths ..I love mine its so much easier to move from room to room with it on and no more kinks in the tube...

Because I have carpeting on my floor, my hose curls and kinks, I pull it to stretch it the wipe it down with a dryer sheet like, Bounce or Downy. Gets rid of the static that makes it curl. Lasts for a week or two and then I do it again. Yep, it's a good reason to sit and rest a bit....lol

I bought WestMed purple tubing on Amazon. It’s kink and crush resistant and has saved my sanity. I bought swivel connectors to join 2 - 25ft tubing. Wiping down the tubing with a dryer sheet will reduce static that makes it even more twist resistant. A little shake uncoils it quite well.

Go online to Amazon. They have connectors that both connections swivel where you connect. I use those and virtually have eliminated the problem. Not like the other connectors that only one end swivels.