I feel you on this one, OP. It definitely sucks to sit back and do nothing while seeing everyone else ski on insta/ns etc.
Build a skiing playlist for the ride to the mountain to hype you up when the lucky day finally comes.
Put some of your older gear up for sale and see if you can scoop up another cool piece of outerwear or skis.
Play a ton of shredsauce (
https://shredsauce.com), or if you have a console you could get Steep. I've had plenty of fun on that game, and last I saw it was selling for just $9 on the xbox one store.
Spending a lot of time on newschoolers is also great, just checking out other's edits, responding to threads, and keeping up to date on the shenanigans. Maybe it's just me but I have had a lot of fun doing that.
If you or a friend has a trampoline start working on some tricks that you want to throw on snow this season, whether that be a backflip, a cork 3, flatspin, etc.
Hell, if you ever hit rock bottom of boredom just download tiktok. I'm guilty of doing this but somehow scrolling through the stupid shit on there has kept me entertained for hours. You only have to sacrifice a little bit of your dignity.
Not sure how much time you have on your hands or how crafty you are but me and a friend used to have a blast making finger skis. All you need is some index cards, a gluestick, and some scissors. then you can also build your own little rails and whatnot. I'm easily entertained so this one was a hit. More info -->
https://www.newschoolers.com/forum/thread/520535/Finger-Jibbin-?page=11
You could also get into kendama and start grinding out some new tricks. You can get one for like $10 on amazon. It's not skiing, but it does produce a similar satisfaction of progression and landing new tricks.
https://www.newschoolers.com/videos/watch/949556/COOP-S-ROOM---Cooper-Eddy-Kendama-Edit-4
You could get to work on building a drop-in and rail so that you can start skiing as soon as snow hits the ground. Cover it in turf and boom, you don't even need the snow in the first place. This is something that kept me sane living in Houston during HS where I literally could not ski. Shoutout to one of the OGs:
https://www.newschoolers.com/videos/watch/949557/Ben-Washburn-Summer-Skiing---I-Am- 
