I’ve got 8 of the rubbermaid action packer in the 48 gal size. They’re pretty darn good for dropping crap into. They stack ok and mostly keep out water except they do leak sometimes. But I just checked the price and wow have they gone up. I can’t buy them locally anymore just off amazon. They hold tents and camping gear. In an emergency I could use them for water. Plus they lock. I have smaller ones I keep locked all the time. Just so I know which containers have fragile stuff and which don’t. Sunlight doesn’t seem to destroy them either. I’ve never tried to cache one but it might make an interesting experiment when the ground thaws.