Just returned after a fantastic, unforgettable experience up in a hot-air balloon. Voucher was given to us by our family for a "round" birthday. Superb views of Mont Blanc and although this is not in CH, it is not far away, so makes a wonderful day out.
Only downside is Megeve is HORRENDOUSLY expensive - cup of coffee €4.90 is the norm! Haven't even paid that on the B'hofstrasse Züri or in Zermatt!