Feet!!!!
Over time my iBook G4 lost all it’s little rubber feet with the exception of the foot on the battery. One nice little thing that Apple did when it fixed my iBook G4 is that they also gave it new feet. I wonder if it’s a basic courtesy to replace laptop feet during repairs at Apple, or if somehow the fact that the feet were missing had to do with the logic board failure. And given that the main set of screws holding the bottom panel of our laptop’s casing on are underneath the feet I guess (however quite unlikely) that it may have had something to do with the failure(s).