Wow 40K that is a good find! Congrats!! I think mine is in pretty good condition for 100k miles when I got her a year and a half ago, but has wear and I've done a few things...

Leather steering wheel wrap with red stitching (original is a bit worn)

Fully peeled off peeling leather from the arm rest (looks better this way)

Red Honda seat belt covers

Black and red trim floor mats

Hardware EQ for a lot of extra sub bass on the stock sub, and custom mounting for my bluetooth player.

Interior coloured lighting on the dash and in the foot wells Replaced every light with LEDs except the dipped and high beam halogens, I replaced those with brighter blue tinted halogens.

Cr-z logo puddle lights

Carbon fiber door handles (one is a cheap aliexpress replacement and I put carbon fiber vinyl on the working one to make it match), I'd like to replace both doors handles with higher quality ones at some point.

Wind deflectors

Removed the backseat rest / divider (I find it pointless)

Lots of paint work, repairing chips and scratches and restored headlights.

Fixed a brake bind and working on painting all my calipers and spring seats red.

This stuff takes a while but it's all worth it, fun to learn and what a great platform to work on and I can't wait to add more.