To be successful with the ancient art of making hash, in particular bubble hash, you will need a filtering device, of which there are several to choose from. You will need some very clean buckets and some water. You will filter your product, marijuana, stems, trimmings or whatever you have chosen, through several degrees of the filter bags, filtering out more and more each time. At one point, depending on the system you have chosen for your endeavor, you will be needing quite a bit of ice. It can take some time to do, but your end product will be clean and enjoyable.