LOL, this thread compelled me to pull my bubble bags out of our shed. I, well...my other half, did the mixing last time we used them with a paint mixer on our battery drill. We were working with two pounds of mostly trim and a little shake mixed. We were able to get about a half ounce. It was a surprisingly low yield...but was POTENT stuff! We used crushed ice as the cubes cause the stirrer to "catch" and the drill would torque the hands hard.
Cannot wait to trim our upcoming plant and see what we can make with whatever we get!