Would this still count as mini?
I use it to run multiple instances of a game on the background. Due to space restrictions I had to place it in a small cabinet in the livingroom but the noise was too audible under load (note: my house is otherwise very quiet so any noise stands out).
Hence started the quest for silence/aka more cooling.
I tried the external 60mm noctua fan mod, that made it very silent under light load but 100% still sounded like a small jet engine humming in the cabinet.
I came across this 120mm cooler on marketplace for €7 and decided to go all in since the top cover was cut anyway.
Wiring soldered to a fan connector, cut the top even more to fit the cooler and epoxy glued the thing in place on top of the original base plate (treated with a heat gun first to desolder the original fins).
Result: 38C at full load, with fan running at half speed and completely inaudible unless you put your ear to it.
Complete overkill but a fun project nonetheless.