I have 2 boys aged 5 and a half and almost 3 yrs. They have recently started that annoying sort of bikering that children are so good at and I was wondering if anyone can guide me on tactics for dealing with this during the summer holidays when they will be together so much more. I also have a new baby (7 wks)so a bit restricted by her needs too. I was thinking about the sort of things I half remember from TV - a jar which you put marbles in if they play nicely and take them out if they squabble - that kind of thing. Has anyone tried something they could recommend?