[Paula&Charlie]

Good afternoon,
A decent set of E torx (Star) 3/8 drive.
Magnetic torx screwdriver set.
Trim removal tool set, to protect all those plastic pieces we have removed more than once.
But...my all time favorite and the tool that has bailed us out (closed box wrench ratcheting in E10/E12) which saved use a mountain of grief removing the heat shields over the cat, as well as the cat bolts attaching the flex pipe to the old muffler. I found there are a lot of bolts on the car in size E12.

 

[Paula&Charlie]

WOW! Thanks for this, didn't know. I have located some inexpensive sets of these. In your opinion, what is the largest size required?

Oh You’re so welcome sweetie,
The E-torx we bought E4 to E20. Most I doubt we will ever use, but you know the Ole story about not having the right size.
The standard Torx we went from T5 to T40 magnetic because it’s a PITA removing something and losing the screw. Go for the magnetic (Amazon)
The Panel removal tools we picked up the 23 piece kit again off Amazon. This kit has proved invaluable when it comes to removing those plastic pieces and connectors. The car is loaded with clips.
Paula

 

[Paula&Charlie]

That sounds like a wonderful idea as space is at a premium in our beloved smarts. As time goes on you will discover what tools you use most.
I would love to see the finished product, so if possible send a picture.
Have a safe happy rest of the weekend.