Ozzy Scoobourne

Hi people, hope you are all ok and not too frustrated waiting to get out on some nice sunny day in your scooby. Can anyone tell me if there is anything tasteful I could do to maybe enhance the interior on a MY99. Its ok but I just wondered what was out there. Question 2 is what sort of oil should I be using as I have seen there is quite a difference of opinion on this one.I hear that you shouldn't have it full to the maximum either.
Just as a quick point, I have only had my scoob a couple of weeks (and love it more and more each day) and I felt extremely in control during the crappy weather that we had. Safest I have ever felt in a car. Finally, I got a small nod from a black wrx last saturday so the old acknowledgement thing is alive and well.