These are the products I use and recommend everyday. Click on the links to purchase directly from Amazon. Full disclosure: I receive a few pennies when you buy from one of my links. Help me stay in business, so I can help you on your journey.
Small S Biners
We use these to tie our hatch covers on, making them quick on/off. Durable glass infused plastic. I sometimes sell these myself, as they can be hard to get off Amazon. But if they are available buy a bunch. Many uses. Link.