Finally got my Kombucha mother growing a full baby. Working on transferring it to a 1 gallon glass cookie jar tonight. The best thing about the mushroom/SCOBY disks is that you can compost them if you have too many (assuming you don't sell or give them away). They can also be fed to the chickens if the disks get too old for re-use.
For anyone who doesn't know about Kombucha SCOBY: If you let it sit a long time in the sweet tea, it eventually turns into vinegar; the disk is essentially the same 'mother' that you'd brew with ACV.
You guys really are trying to get me to make my own ACV and kombucha, aren't you???