You really ought to make the effort to get down to Chamonix and take the cable car up Mt Blanc. Aiguille du Midi (3842 m ) to more precise.
The views are just tremendous. 360 degrees of beautiful mountain scenery. Mt Blanc is so beautiful.
It is quite expensive however at €33. 80 return.
At the top is a cafe and shop. You may also go on a lift for a small charge to the very top of the rock pinnicle.
You can opt to exit half way down or up and take a walk on the mid level paths - very worthwhile.
You can go further on another smaller cable car across the mountain plateau to Italy if you wish. We didn't but given more time I would have liked to have done that.