Do you ever wonder how it is best to get good candid photos of your kids. I would recommend you use the opportunity when your children are in a confined space.
Last night I took a few images of my girls whilst in the bath.
I also enjoy taking photos of my children whilst doing activities. The activities in our house often consist of baking and I am very partial to anything with chocolate so our baking often involves chocolate. Again my kids are happy doing these kind of activities so I often get a lot of expression and the messy faces just add to the natural feel of the photos.
The best advise I can give is to have fun capturing photos. I really enjoy taking photos that provoke emotions and that is often achieved through capturing peoples personality.