I'm still using a 40 year old 5-gal bucket with a swivel top
It ain't pretty, and the dimensions would probably not work for most, but the thing is water proof, and if there is 2" of water in the bottom of the boat, no worries of getting shells wet. It also doubles as a shitter. I fold up a trash bag and 3 paper towels in a Ziploc, and when nature calls, pretty damn sweet to be able to take a few things out of the bucket, line it with the trash bag, and sit in relative comfort. Was hunting South of Venice a few years ago, pushed up in the canes, when the urge hit
No way to get out in the soft mud, and no way to hang it over the side without flipping, and was about to bust a gasket. Searching through my bucket, noticed I had a trash bag in there.............and ever since, have kept several "shit kits" in my bucket, and they have kept me from being miserable more than once!!!! If I am walking into an area, I've got a good vest (Filson-well worth the money), that I can pack what I need into for the trip, and it stays in the bucket as well.