You can also use well cleaned medical bottles(pill jars), however you may have to get creative, a little DIY, for mounting a suction cup if you want it off the ground. Some people do not like that they are semi-see through, they can be burried at an angle into the substrate, or coated with silicone and covered in moss/peat fiber/etc, or simply covered over with leaf litter.What companies sell vert kits and film canisters?