Congratulations, welcome to the club, and get ready to enjoy the savings and not having to go to the gas station all the time.
I think you got the main one in a decent mud/snow catching mat as the OEMs don’t have good coverage. Other access. are more according to personal preference so I won’t add a list of all the ones I spent $ on
I will give you a couple of suggestions:
1. Immediately, clean the exterior and get a good coat of quality wax on it. Mine came without a decent waxing. I won’t suggest brand or type (syn vs carnuba, etc) so as not to start WWIII or get into the “ my wax can beat up your wax”. Just get the protection on that new from the factory, mostly bare paint before it’s too late.
2. Always keep a jug of windshield washer fluid in your garage since the reservoir is very small and you’ll be refilling it much more often than in your old car. I highly recommend buffing some form of hydrophobic coating on the windshield like RainX and adding it to the WW fluid. This will go a long way on helping the rather anemic amount of fluid the WWs apply directly from the blade instead of a spray from the hood. Another hint is that you have to hold the WW wash position for a longer time than you are probably used to in pest to get the windshield cleaned.
3. If you want a paper copy of the manual, you will have to order it within a few months of purchase to get it for free. It will cost you if you wait.
I attached a copy of the Clarity specific PDI which has a lot of good info including the plugs that supposedly help w sound deadening.