I.e., don’t, as in do not. Alan Sullivan, the Seablogger, did, trying to retrieve a sesame seed and:
"When I tried to pry off the key cap, the whole delicate underpinning scattered in a shower of miniscule parts…There were three tiny interlocking bits of plastic under the cap. Four nubbets on the underside of the cap were supposed to fit into microscopic openings at the ends of a rectangular pad that was held in place by two harness-arms. These in turn slotted into almost invisible mounting fixtures on the laptop chassis."
A true-life horror story at Fresh Bilge.
THE TEXAS SCRIBBLER 
Oh gosh. My cat pried four keys in one mighty pull. It took IBM two weeks to repair, and I had some signs that the whole keyboard was replaced.
But some laptops have much simplier keys, which could be set back in one click and do not have a lot of parts.
Well, they do not have that famous IBM click too.
I’ve never owned a laptop and I wouldn’t have dared mess with the one the paper gave now and then for road trips. Have no use for one, now, as a recovering journalist. 😉