I've been using different sizes of these bird seed containers. They have a spout, a larger opening, a handle and they are clear plastic. Here are some links just to give you an idea what I'm talking about. I've gotten them at my local Lowe's, Tractor Supply and Meijer's (I'd guess you could find them in Walmart, but I normally don't shop there). I get some for bird seed and fertilizer (etc...). You'll find them in the bird seed isle in your stores. I dedicate some clean unused ones just for bird seed and some for fertilizer and 'such'. I mark on the sides with a sharpie what it is and/or since it's clear the bag will show through on the side.
Works for me, because I drink iced tea every day year round and the coffee that we do get is Dunkin Decaf, which comes in bags.
http://www.duncraft.com/Seed-S...
https://www.amazon.com/dp/B000IKAB88/
https://www.amazon.com/dp/B000IKAB88/