There are sects (like the ultra orthodox) who don't use Sabbath mode specifically for this reason. They say that the added weight causes the elevator's motor to work harder thereby desecrating the Sabbath.
A prohibition on "creation" is over-broad. Any action taken purposefully can be considered an act of creation. That would include choosing to adhere to the law (thus creating a world where there is more compliance with the law) even if that takes the form of deliberately doing nothing.
The only way I can think of to completely avoid creating anything would be to remain unconscious the entire time, thus preventing yourself from making any choices.
Yes, that is understood. My point was that if the intention was to prohibit "acts of creation" then the official list is woefully incomplete, and rather arbitrary; other acts which could equally well be considered "creation" under the same reasoning are not prohibited. (Mostly IMHO because if said reasoning were applied consistently it would be impossible to follow the law, regardless of what one did or did not do.) It leaves the impression that "creation" is merely an excuse or after-the-fact rationalization, not the actual reason for the prohibition.