Then hoover up the resulting bio-hazard that was in your keyboard.
With a bit of stock, the contents of my keyboard would probably make a decent soup.
With regard to buses, when NT did his leg in last summer, one of the first outings we managed was down to MOSI where they were having a vintage bus display. They had a Routemaster doing a free roundtrip round central Manchester, and NT was like a kid all over again, having grown up with those buses. Getting on and off a Routemaster on crutches is quite an undertaking in itself, but he even made it up the stairs to the top deck of a static displayed one.
I remember he was absolutely wiped out by the time we'd got the tram home and hobbled back to the house, but it managed to be one of the very best days out we've had!