Previously, Nicole has given us some "serious" advice on photographing children. In a more lighthearted vein - I found this list of "how tos" in the Toronto Globe and Mail - although it apparently originated in the Christian Science Monitor:

Shooting the kids

Photographing children can be challenging, writes Jody Mace in The Christian Science Monitor. Kids have short attention spans and are wildly unpredictable. She offers some tips:

Take care in how you arrange them. Separate the kids most likely to hit - or else take separate pictures. You can always photo-edit them together later.

Make sure their outfits don't clash. If one child spills ketchup on his shirt, consider spilling barbecue sauce on the second child.

If your children get antsy, take pictures of someone else's children. That will show your kids, especially when you hang the pictures in the living room.

Let the child be part of the action. Young children love taking pictures, especially with very expensive cameras that are out of warranty.

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Pehaps folks here might want to add their own "tips"?