So where does that leave the Cabin Staff when they need to change a seat cover?
Well they could start by writing up in the aircraft technical log that they were required to fit a replacement item in flight. Seat covers and cushions are time life components that make up part of the aircrafts crashworthiness.
Many people seem to think that the inside of the cabin is inconsequential and unimportant.
Because a Crash isn't an everyday event it is easy to get complacent and consider it an area ripe to cut costs. When the moment arises in a dark smoke filled cabin a working set of emergency escape paths cover lights might just save your life. The burning seat cover that should have been replaced after the fire retardant was washed out of it is now burning your a...s. You try and escape out the over wing exit but the wrong set cushions have been fitted impeding your exit. Bugger!
Meanwhile in another part of the sky an aircrafts engine starts to burn, but there is no fire indication for precious seconds because the wombats that spray painted the aircraft didn't mask the engines and filled the guts up with paint, coating the fire wires and making them unserviceable. Then they same aircraft starts to depressurise because they also painted over the safety relief valves. (Yes this is specialist maintenance, and no they sa,y you don't need a LAME to take responsibility for an airworthy result).
Thing is about aircraft maintenance is that it's quite often accumulation of little "inconsequential" things that add up to cause a big thing.