I made quick notes for myself and leave them at the front door and review at pick up so I don't forget anything. How many poops, any issues with eating or sleeping... anything behavoural.

If a child is agressive then I address it every day it happens. If it's as simple as cleaning up then I don't bother, that's something we work on. But if it's hitting, throwing, pinching etc. That's something mom needs to know about daily.