Now you become an obsessive reader of this redit and /r/TeslaModelY. Do some searches for accessories, and specific things like "charging" and "winter tires" if you're in a snowy place.
Personally the only thing you'll probably want is a console organizer tray. otherwise the Y (and 3) have a huge hole in there. an organizer lets you put sunglasses, loose change, hand sanitizer, etc in a convenient spot. like this: https://smile.amazon.com/JKCOVER-Flocked-Organizer-Compatible-Accessory/dp/B07SM7XCPY/ref=sr_1_3?dchild=1&keywords=model+y+organizer&qid=1610664329&sr=8-3
If you road trip or camp, you'll probably want a NEMA 14-50 adapter to plug into RV outlets. That's a great emergency backup if you're out exploring - just find an RV campground and they'll let you charge for free or a few bucks.
Don't get sucked into buying a ton of other stuff. Just search the forums and browse around, but a lot of what people claim is necessary is just personal preference for random things. Example: console wraps, frunk struts, floor mats, etc.
Lots of things sound fun, but better to just be aware of what's out there rather than jumping to buy it all.
JKCOVER Flocked Center Console... https://www.amazon.com/dp/B07SM7XCPY?ref=ppx_pop_mob_ap_share
I should have said - I have a 2018 Model 3. This product doesn’t fit the Model Y, but hopefully it gives you an idea. I imagine there’s a close substitute out there.
Something like this: Amazon.com: JKCOVER Flocked Center Console Tray Organizer Compatible with Tesla Model 3 (2017 2018 2019 2020) /Model Y Custom Upgrade Accessory: Automotive
I don't think that one actually fits, but I haven't tried it myself.
I got this one, it’s a really good one. Looks like the same thing here. JKCOVER Flocked Center Console Tray Organizer Compatible with Tesla Model 3 (2017 2018 2019 2020) /Model Y Custom Upgrade Accessory https://www.amazon.com/dp/B07SM7XCPY/ref=cm_sw_r_cp_api_glc_fabc_PqT4FbE229ZBE?_encoding=UTF8&psc=1
JKCOVER Flocked Center Console... https://www.amazon.com/dp/B07SM7XCPY?ref=ppx_pop_mob_ap_share
EV wrap center console wrap.
Taptes USB hub.
I'm assuming the Y doesn't have the refreshed center console.
Also get this JKCOVER Flocked Center Console... https://www.amazon.com/dp/B07SM7XCPY?ref=ppx_pop_mob_ap_share. Great accesory so you the certain console is not a dark hole lol
As little as this is, it made a huge difference in being able to store our garage door opener and sunglasses alone.
I really like my center console insert. https://www.amazon.com/JKCOVER-Flocked-Organizer-Compatible-Accessory/dp/B07SM7XCPY
I really like having my trunk hook: https://www.ebay.com/i/173798618324