Joshua had just gone to the bathroom, so Isaac was giving him his treats. Suddenly Isaac runs out of the bathroom, grabs the shape sorter toy, and bringing it back to the bathroom. A few minutes later Isaac told me that Joshua had taken a test and sort of passed. I have no clue what was going on.
Then Isaac figured out how Joshua could turn off lights by himself. Of course, it usually takes about four times for Joshua to grab both sides of the yarn, but both were pretty excited about it. I expected some tape to come out next and for every light switch to have some yarn taped to it, but Isaac hasn't figured that part out yet.
As for Joshua, he's happy to do anything with Isaac.