The same thing that keeps any man's hat from falling off - the correct size.
gravity
Keeps them from falling off the burger.
gravity keeps us down
it keeps the sun off of your head and it matches the uniforms
The safety bars, handels and restrains...
The stigma sticky that keeps the pollen grains from falling off.
go to the vet
the gravity in earth
If your patch keeps falling off, the estrogen level in your body could drop since you're not getting the full dose of birth control, and you could have bleeding. Consider using the morning after pill if you've had sex in the last five days, and contact your health care provider about an alternative method. In addition, if you choose to stay on the patch, get a prescription from your health care provider for a single "emergency" patch that you can have on hand to replace a patch that keeps falling off.
Fit a new belt tensioner
Take door panel off. Find out what is broken or damage and go from there.
a few are: speakers in stereos, electric can opener (keeps lid from falling off), friction flashlight, trains.................................