I see that you have swallowed the popular myth there. In fact he had the builders build the chapel upside down so it was easy to paint, and then reassemble it the correct way up. LdV (after whom the vans are named, incidentally) said that next time he would have been better advised to invent said anti-gravity device as it would have been less hassle.Leonardo da Vinci invented an anti gravity machine so he could paint the ceiling in the Sistine Chapel.
Another avenue he tried was an early predecessor of the Marty McFly hoverboard, but unfortunately the Italian MOT authority of the time weren't keen, so it lay unused for several centuries until Robert Zemeckis found it in his shed.
Funny how things work out.