I have just ordered a new lid for one of my kegs to replace an
old lid that was causing me pain due to a leaky valve. As a result I will have a spare keg lid and I'm wondering whether it can be turned into something useful. I've been thinking of modifying it to accommodate an air lock so that it would allow me to ferment lagers in the fridge alongside my other kegs.
Any other innovative ideas for an old keg lid?