If you open it, close it
If you turn it on, turn it off
If you unlock it, lock it
If you break it, admit it
If you can't fix it, call in someone who can
If you borrow it, return it
If you make a mess, clean it up
If you use it, take care of it
If you move it, put it back
If it belongs to someone else, get permission to use it
If you don't know how to operate it, leave it alone
If it is not broken, don't fix it
If it will brighten someone's day, say it
If you fall off, get back on.
There. I'm "back on" schedule. See you in two weeks!