Ski. There’s more than enough skiing here for a week for all abilities, and it’s great for snowboarders too. There are 97 lifts, including two funicular railways, to whisk you around the ski areas of Tignes and Val d'Isère. Beginners will quickly be able to master the blue runs on the Aiguille Percée side of the valley, and there are easy slopes in the Marmottes bowl on the Val d'Isère side. If you're more accomplished, head for the glaciers and high-altitude unpisted open bowls.
Consider autumn skiing here: Snoworks runs courses for juniors and adults from mid October.
Enjoy off-the-slope options including pony-rides, husky-sledding, bowling, ice-diving, ski-joering (being pulled on skis by a horse!), snowmobiling and helicopter sightseeing flights.
Unless your accommodation provides a crèche, kids' club and baby-listening, take advantage of the local private nanny services.