Make professional mushroom growing containers out of jars or buckets!
These self healing injection ports allow you to insert a syringe into the container without risking to contaminate it. The bytyl rubber heals right up after you remove the needle. Nifty huh?
Drill a 13 mm hole in the lid of the container you want to use, slap some high temperature silicone on the corners of the injection port (optional) and you are ready to go.
