Very thorough! Second most of this. Especially sledding. But you can also find pro snow tubing at Wachusetts if you're up for a half day trip and have the $30 - if I'm remembering correctly, they bring you up with a rope tow.

I will say I've never owned snow tires and haven't had any issue, even during my several years in Western MA where we had considerably more snow. But if you can afford them/have that expendable income, they are helpful.