I think it depends on what trim you bought, and what you want out of the car. Tons of people seem to go for PPF, some get the sound upgraded if you get an SR+...
I have an 2020Q3 SR+ and am very happy with it, so I went for some cosmetic stuff mostly:
- Knock-off weathertech style floor mats,
- A TapTes USB port expander,
- 18” aero wheel kit (removed the covers),
- “Performance” pedals (why not!),
- A cupholder thingy (so cups aren’t as loose),
- Lift pucks (just in case),
- USB-c charging cables for the rear passengers,
- White console wrap to match my white interior (this did not work out as intended/I am horrible at vinyl wrap - scrapped), and
- Mudflaps
I was considering the $80 wiring harness get the tweeters working, but honestly I’m fine with the sound as-is...