My wife buys a lot of stuff from QVC on the internet. She has the kitchen cabinets and her "craft" room loaded with various sized containers called "lock & lock." They are heavy plastic with a lids that are lined with a band of silicone that seals them from just about anything. I have the usual tackle boxes with lures that were tangled/rusty/disorganized and bottles of scented baits that leaked and the thought that I could put organize those things in the smaller "lock & lock" containers made sense. The advantages are that 1) they are clear and I can see what's inside without opening them. 2) they some in many sizes and shapes. 3) they are very tough and durable. 4) they seal TIGHT with at least 4 locking tabs on all sides so they seal so tight that they float. 5) they can be stacked or packed just about anywhere. I even used a medium sized one last summer to keep nightcrawlers in ice water and even that worked great. As far as I know QVC is the only place "lock & lock" is for sale, and I yet to see any copies of it elsewhere.
Some of life's most precious memories take place in the presence of a fish.