I have been using a Q-tip container which has got to be around the lightest option. I bought a Witz container to try out but have not yet.

What about the OtterBox? Those look nice

Or boxes from Richard Wheatley Ltd?

Anyone have those?

Big white tool box that goes across the bed of my truck. Carries enough for four for 72+ hours. Food, water, shelter etc.

I use Aloksaks, they are plastic see-through bags similar to Zip-Locs but they are sturdier, and are waterproof/airproof (certified by the Navy to be waterproof to 200 feet).

I trust those for my wilderness PSK used for hiking and search & rescue operations.

If you need something stronger, I would go with Lock N' Lock containers available in various sizes. They are strong, waterproof and cheaper than Otter boxes or Pelican cases.