Bottlecap mine recipe

Ditzy Doo took all but a few of my coins; I had no idea if what I had given her was a fair price, but I suspect I was getting a generous discount. She also insisted on giving me a sheet of paper detailing an entirely different use for bottle caps -- a way to turn them into homemade mines. Apparently, it was going to be an insert for the Wasteland Survival Guide’s chapter on mines that somepony discouraged her (probably wisely) from including.