If the kids are driving you mad these holidays you might want to think about introducing them to Miko, a Japanese manga-style doll who needs some help dressing in the mornings.
It's a very simple game aimed at very young children. Miko is surrounded by many different styles of girls' clothes: short skirts, long dresses, a kimono, trainers, tiger-feet slippers, an umbrella and her pet cat.
By selecting each item and dragging it onto Miko you can dress her in your favourite style. I had some problems selecting and dragging some of the clothes which frustrated me; I guess a younger child might start screaming if it doesn't work perfectly.
And the lack of options means all those kids with low boredom thresholds are going to get pretty fidgety after about two minutes. Still if you can invent a few stories, perhaps it could be a nice teaching aid.