People shrinkwrap the digital therms but I wouldn't want that in my fermenting beer.
The grommet is a good idea, but I see it leaking or using some sealer I wouldn't want in my beer.
Who knows how to make love stay?
Tell love you want a momento of it and obtain a lock of its hair. Burn the hair in a dime-store incense burner with yin/yang symbols on three sides. Face southwest. Talk fast over the burning hair in a convincingly exotic language. Remove the ashes of the burnt hair and use them to paint a moustache on your face. Find love. Tell it you are someone new. It will stay.― Tom Robbins, Still Life with Woodpecker