I use a sports drink cup with a hole drilled in the bottom of it. For about five dollars you can buy one and it is sturdy enough that the sides don’t collapse. The good thing is it’s big enough for the whole package to fit in but you don’t have the bulkiness of a huge sun tea jar. T he opening is roughly 5 inches in diameter and the length is about 9 inches long.Works for me and I get a great pump!
nedpickle