I often turn my keyboard upside-down and rap it against something to loosen up the sediment.
When I had compressed air, I enjoyed blowing it out, but probably industrial compressed air has oil in it.
I also wear out the key markings.
NO sticky label is sticky enough to resist fingerprint oil and hammering.
A lady at work who labels aerospace components with tough white enamel was able to refresh some key markings for me, but they only lasted 6 months.
People in nearby cubicles tell me they can hear me hammering away.
In my last job, they complained that I "kept them awake".
I liked my old Apple ][ keyboard. It was "mechanical" with springs that resisted, and a "click" that let you know it had been pressed.
Thanks to "the miracle of Progress", every keyboard I've used since then has been MUCH worse. Much MUCH worse. And highly disposable if you don't mind filling landfills.
But, no doubt, slightly cheaper, which is 95% of what matters to modern manufacturers.
And I'm not even counting laptop keyboards, which are worse ^ the fifth power.
Does anyone besides me remember the "PC Junior" (I may have forgotten the name - it had the "Chicklet keyboard" and I think was from the approximate era when IBM PCs began to be shipped WITH hard disks.) We joked that IBM's Marketing Department didn't have enough challenge selling normal IBM PCs, so they created a product almost impossible to sell, just for the challenge. That keyboard was bad even by modern standards!
