i had the same problem as you cos i spilled rum on my laptop. it eventually became totally broken, but i used the usb and got a further 6 months out of it. get a usb keyboard. this is silly. also i had the display screen thing, i used a monitor i got for free from freecycle as my laptop screen for a while after the laptop display broke but then the thing just wouldn't turn on.
take the hard drive out and encase it, you can usb it to anything after that. i'm still using the hard drive from my last laptop for the crucial files and documents i had on it, and also for extra storage.