So what happens when you’re out and about with your camera and you don’t have a tripod or monopod but need the extra stability? Here are a few tips:

1. Hold Your Camera Well – I’ve previously written a post on how to hold a digital camera which is largely about keeping your camera still when shooting. A good steady grip goes a long way to fighting camera shake.
   
2. Lean on Something – find a wall, tree, fence or some other solid object to lean upon to give you a little extra stability. It’s not rocket science but it does make a difference.
   
3. Put Your Camera Down – Find a clean and stable spot to put your camera down on a solid object (the ground, a rock, a seat, a brick wall etc) – line up your shot and take it from there. Many photographers use their camera bag for this, others travel with a small bean bag (see next point) to rest their camera on.
   

Read full article: http://digital-photography-school.com/alternatives-for-tripods-and-monopods#ixzz1y2Opreyy

What about the McNally grip?

I like beanbags (or a suitable equivilant) because they are the most stable in windy conditions.

Neat and simple.