I use empty pill (Ibuprofen,Tylenol, vitamin etc) bottles.These bottles are tough, bomb proof and with a bit of saran wrap under the lid for extra waterproofing insurance, make for excellent coffee containers and also very useful for other things such as drink crystals, sugar etc.
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Earth and sky, woods and fields, lakes and rivers, the mountain and the sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books.
John Lubbock