I've got a laptop that the kids spilled some milk on. For the first time ever (in my experience), removing the keyboard and cleaning it with isopropyl alcohol

I've got a laptop that the kids spilled some milk on. For the first time ever (in my experience), removing the keyboard and cleaning it with isopropyl alcohol made things worse. But there are no spare keyboard assemblies available from the manufacturer or elsewhere, and eBay only has buy-it-now options for parts-donor laptops at prices exactly equal to flawless laptops. So now I have a perfectly fine (actually really nice) laptop with a malfunctioning keyboard that insists on constantly inserting phantom keypresses. My thought was to use the 3D printer at the library to create a new topcase and turn the thing into a SFF PC. Oh, well, except for that one thing: the power button is part of the keyboard assembly. So the whole thing is just e-waste now.