Here are all kinds of ideas for what to do with empty plastic bottles. I hope one of these will work for you: https://www.onegoodthingbyjillee.com/31-creative-ways-to-reuse-plastic-bottles/
Im a hairdresser. I never thought to reuse the hydrogen peroxide bottles! But not I'm curious. I found this link!!
I take all plastic containers to my local recycle center.
Make tea light holders make planters then hang all together