I thought we had a "ZRH layover" thread a while ago, but couldn't find it when searching in the forum, so posting it in the main lounge/ZRH thread:
Good news for anyone planing on actually leaving the airport and visiting Zürich city: As of tomorrow, 30th March, the infamous "lake surcharge" will be no longer, all boats can be taken with a regular ZVV ticket again. Which means the popular river cruise is "included" yet again in any airport+city ticket (Zone 110 and 121) who are a rather cheap option for anyone having a lengthy layover but not interested in museums etc.