I went outside and clipped a bunch of ivy. I took it into the tub and washed the leaves with Dr. Bronner's soap and water to get the dirt (and bugs if there were any) off.
I pulled off the bottom few leaves and put them in the jars.
The thin jar looked too busy, so I took most of the ivy out and left a small bunch of ivy and peppermint in it. A week later, I have changed the water once, and several of the branches have begun to root already. (even the rosemary!)