In summer the cable car at Flegere and the Index chair lift operate, taking you up to an altitude of 1,894 metres and then on to 2,396m at the top of the Index.
Mountain bikers can use the cable car but sadly are no longer allowed on the chair lift. Hikers can head to the Lac Blanc from here, which is well worth the trek and you're bound to come back home with some cracking photos.
Lower down the mountain you can walk down to Chalet Floria and grab some refreshments. You'll know if they're open as they fly a flag to let you know.