Our problems are we have too much of it and dc are starting to be increasingly possessive over it. Dd1 is nearly six, so understands that things have been given to her. She seems to have regressed a bit with sharing - wants to share other people's things but not her own! Things used to be a bit more whole family but ds, nearly three, does still tend to mess things up a bit when dd is playing so I can see where she's coming from.
I would love to know how people who have peace and tranquility over stuff manage it. We also have dd2, 12 weeks, so this isn't going to go away. And two birthdays coming up....