Not sure how the pantyhose would work and I wouldn't try it unless someone has already done it with success. You should be able to get knock off bubble bags for $25 or so on Amazon. For dry ice hash you only need 3 or 4 bags, IMO. We used 73, 90 and 180 micron bags. the 73 and 90 make nice quality hash for smoking and the 180 we used in cookies.