interior and exterior trim that wears out?

I just bought an '04 and wondered what interior trim parts and exterior parts tend to wear out or fade. I am looking at buying and tucking away some of the smaller items now in case they are not available or just too expensive down the road.

I have a '91 LX and all of the exterior trim around the door glass is pretty rough. Does that rubber strip on the top of the door where it meets the glass start to decay on the '94 up cars too?

What about interior stuff that is easy to tuck away such as the door handle bezels; do these crack like the fox cars?

Anything else?

I figured the interior/exterior trim is made of the same stuff on the '94/5 cars as the '99+ cars.

I know they are not rare but with my '91 (also not rare) the trim parts that used to cost $13 are now $35 and Ford will likely stop producing them at some point which would leave me with overseas junk as the only option.

I am looking at owning this car for a long time (the '04) and wanted to stock pile as many things that I could forsee that may become degraded.