After along hard search spanning several weeks and hundreds of milkweed plants - to find a monarch pupa - I've given up. I decided to bring a pair of monarch caterpillars home with me. I did some reading that gave some clear instructions about how to keep them alive (which mainly involves plenty of clean space and maintaining a fresh supply of milkweed leafs).
On the first night, they were fairly unexciting to watch. They freeze in one place when they sense vibrations (probably to avoid being eaten by birds). We named the Kevin and Keanu (after a pair of unexciting actors...) On night two, Keanu climbed to the top of their box and hung upside down inhis J shape, the precurser stage to making the big change.