All the clear containers I've used are more brittle and expensive than rubbermaid stuff.

I use the old style rubbermaid tubs for camping as well as storage in outdoor sheds. Sheds water and squirrels very well, and does a decent job of resisting moisture/dust.

If the stuff inside is particularly moisture-sensitive, I pack it in one or two Glad clear garden bags (avoid cheap imitations). That way I can hoik out the entire bag and figure out where my spare shoes went.

The stuff you put in bags has to be reasonably dry or it will "compost" while you're not looking.

I'm not sure my method would survive the sinking of the Titanic, but then I'm a heckuva long way from the ocean. :-)