New challenges seem to arise with each stage of the babies' development. Climbing is still a big issue, and although I've given up on chasing Dan and Kiki off of the coffee table, climbing up into the high chairs is now the activity of choice for Kiki. She's doing it at least 6 months earlier than Joe ever even tried, which means she doesn't listen when I tell her to stop.
After a few days of constantly pulling her down, I've finally discovered a solution that works. Pillows:
But of course she then moves on to the empty chairs and encourages Dan to join in:
I'll let you know when I figure this one out.