I'm not sure if this is the right forum to ask this on, so please tell me where to put this if not!
I'm trying to make weights to lift at home, and I found online that using gallon milk jugs and filling them with sand or something similar is a good way to do it. However, I'm trying to make about 25 pound weights, which I'm not sure the sand would be heavy enough for. Am I wrong in this? What would be a good, easy-to-access (and not too expensive!) material that would reach at least 25 pounds or so in a milk jug sized container? What other way could I reach a weight of that size with easy to access materials, other than milk jugs?