GULP container...

I got these off Amazon and they work great for gulp:


Cheap and they have two sizes!

I can use just about any watertight container on my boat or my buddy's boat without spilling or leaks but for kayaking which I do 90% of the time the Plano container WhatKnot posted is the best. I can open the screw on top onehanded and I can "recharge" a bait in it during the paddle back for the start of another drift. Even in a chop none of the juice has come out of the container. None of the half dozen I have ever leaked (one had a crack in the bottom that I repaired with model glue) and I keep them in one of those small zippered nylon bags with all the pockets that are just great for bringing tackle on a yak.