If you have the time, on your way from Morristown to Stowe, I suggest that you take the long way around to Stowe... Rte 15 east from Morristown to Cambridge and then Rte 108 south over Smuggler's Notch to Stowe Mountain Resort, then down the Mountain Road to Stowe. You can take a break and stop at Stowe Mountain Resort and ride the gondola to the top of Mount Mansfield for some great views... or there is a toll road to the top of Mount Mansfield.
And of course, don't forget Ben & Jerry's in Waterbury on your way to Burlington.
There is a nice dinner cruise on the Spirit of Ethan Allen out of Burlington harbor that cruises along the western shore of Lake Champlain. DW and I took it last year and enjoyed it.
Gondola sounds awesome thank you. I'll check out your other recs too.