They aren't black caterpillars anymore.We have three green and yellow chrysalises. Aren't they cool!
After the greens wilted and started to die back, I clipped the stems of the greens that the chrysalises were clinging to - taking care not to clip the anchor threads from the stem to the chrysalis - and attached them to sticks.
I used Elmer's glue on one with a green stem, but it was a pain because Elmer's takes a while to dry. I propped everything up and together with folded paper. Next time, I'd use a little glue dot.
The other chrysalis had a longer dry stem and I just taped the stem to the stick. It was easy.
Now they sit and wait in their jar for another week or so before they emerge as butterflies.