Having lived in the mountains for a while now we have found that on the full moon in the winter it is very bright. You can see as if it was dawn or dusk (and sometimes even brighter than that). We had also heard that you can go out snow showing to a couple of restaurants in the evenings out across the snow.
This weekend we decided to do this with friends and it was a great experience. We rented our racquets in Les Rousse at a resonable EUR 7 per day and headed for Le Trelasse near La Givrine.
It was a great night and the fondu was fantastic. They have a great selection of different fonu's and if you are there in a group you can try them all with their 3 fondu pot where a divider is placed in the fondu and then 3 different fondus come in the same pot. My personal favourite was the nut fondu which I was apprehensive about before hand but was so tastey.
Although the walk to this restaurant was not very far there is some forest around and so after you can go for a nice walk in the woods under the moonlight.
Hope you can try this and enjoy it as much as we did.