I have a very small heatsink lying around at work that came out of a laptop. It seems to have a heatpipe gizmo attached. It also has space for a tiny fan (unfortunately missing).
I can bring it round tomorrow (if I remember) to see if you can find any use for it.
It was about to be binned in the next clean up operation (rare occurrences in a technicians lab :lol: ) We'll see if it turns out to be useful, if not, we'll just bin it anyway
:-D