Where can I find little plastic clips?
 

(photo now attached) I recently took off my trunk seal which had been leaking, and basically painted it with Prestone Stop Leak transmission fluid. It helps to rejuvenate rubber like you would not believe.

To take off the trunk seal, I had to take off the plastic piece that lays over the trunk lock area, which protects the gasket when you put stuff into your trunk. They have these little plastic clips that hold that part in and I broke a few.

Where can we get such tiny parts, aside from a dealer?

The flat headed T part fits down into the other part (which is now broken). The T part simply expands the other part out so it can hold, sort of like a plastic anchor to a screw.

1991 300d

Dealership or specialist - sorry

Post a picture, many of us have jars of clips and fasteners around, if I (or someone else) recognizes them as something we have too many of, ...

Clips will really add up on these projects, I ran across a receipt recently from when I added the facelift panels to my car, over $200 in clips! Unfortunately, many of these older clips are nylon and become brittle over the years, can't re-use (as you found).

I bought some stuff from this place, maybe they have something.
Mercedes Clips And Fasteners

Transmission or engine stop leak = brake fluid for the most part.

Photo now posted
 

I posted a photo up now.