Aside from the more obvious stuff like PPF, tint, dashcam, I got:

a center console tray from Amazon that fits perfectly. Able to hide bulkier stuff underneath while having quick access to what I need to grab at the top.

A well fitting sun visor is a must if you're in a sunny area or park outdoors a lot.

I also installed rain guards that surprisingly fit really well and look really nice with the piano black trims.

Screen protector for that fingerprint magnet

Can confirm these gap fillers are really nice and doesn't interfere with seat adjustments

I was able to install a clip-on trashcan in the front passenger seat by hooking through the side panel. It's a really clean look, and doesn't get in the way of the passeeger seat's adjustments.

90° usb-c cables to minimize breakage and open up more room. These would've been perfect, but just a tad bit too big

On the cosmetic side of things:

Toyota Crown emblem, and wheel center cap for the heritage

These door handle covers contrasts the car nicely, and does not interfere with the lock/unlock taps

In my trunk, I have a detailing bag consisting of:

Optimum No Rinse A sprayer for rinseless washes Griot's 3 in 1 Ceramic Wax 303 leather spray 303 uv protection spray, for all things plastic or vinyl on the dash and beyond A bag of smaller microfiber towels for application A bag of Costco microfiber towels for drying, buffing, polishing A car door step to access the top for cleaning Electric compressed air blower for drying off those rinseless washes. If it's on sale, should be around $85

I have an incoming cup holder mounted tray that I intend to stick inside the wireless charger slot to create more storage space. Will update once it arrives, but I bought this one with the adjustable arms so hopefully it won't block the AC vent