We had such a great time with Aunt Shana and Uncle David! Graysen learned how to wave! Although, she hasn't really waved since! Kai is still working on doing it for the first time - Judging from this video, he isn't quite ready to wave.
They loved playing with Uncle David, especially when he would lift them up, giving them rides.
When Kai and Gray wake up (and sometimes when they're supposed to be going to sleep!), they spend a lot of time hanging out in their cribs talking to each other. Lots of times, the reach out and hold hands. I haven't been able to get that on camera though. I'll crack the door and watch them (as if I was observing animals at the zoo!!).