My tip above, "cut down on drinking," was tougue-in-cheek. But here's a real tip:

Press the left side of your camera, gently but firmly, against a stationary object. A corner of a building, a lamppost, a tree, a vehicle. If done carefully it's almost as good as shooting on a tripod, at least as far as reducing shake. (You can, of course get better results with a tripod mounted camera using a remote or self-timer.)

There are two drawbacks encountered using this method:

1. It limits where you can point your camera. Best to shoot a bit wider than you think you'll need to give a little extra room to crop.

2. Sometimes, due to the inanimate object available, you cannot position the camera's left side against it. You can try pressing the right side against the support, but that is sometimes too awkward because of the location of the shutter button. Another method is to flip the camera upside down and flip the image when editing.