Today is Canberra Day, and it's Canberra's 100th Birthday.  We went to bed last night filled with visions of spending the afternoon today at the Canberra Day celebrations, including what you'd think would be a pretty special little fireworks display this evening on the shores of Lake Burley Griffin.  I had been thinking quietly about taking a camera along tonight and capturing the fireworks and having fun with the kids, and with my brother and his boys.   Instead, I've been tending to a sick diabetic boy, because Heath started the day vomiting at 7.30am.  I keep telling myself it could be much worse.  It could have been yesterday when I was away.  Heath doesn't like being sick when I am not around.  And he hadn't had his insulin injection before he started being sick, which means that he's controllable and there's no danger of plummeting low blood sugars and trips to hospital.  But I'm tired of sickness, with Heath today, me last wee...