I add lemon slices, ginger or sometimes other dried fruit too. You can EAT the crystals too! Give them to your pets in their wet food if you have pets. Blend them into YOUR food and beverages! Mine aren't mulitiplying very fast at the moment but I still can't keep up. I have four 'second brew' bottles in the cabinet right now ... four water kefir and four kombucha!
A couple times a month I make a homemade meal for our 20+ outdoor cats using milk kefir. They LOVE IT! And it keeps them healthy!
I know, I have one only friend who also does kefir and everyone else thinks I'm weird to drink it too and won't take the crystals and try it. If they ONLY KNEW!!!!!