Two green garden poles from B&Q. I use a piece of thin bungee cord - about 50cm tied in a loop and wrapped around the two canes in a figure of 8.
I keep it 8 inches from the top for a standing shot. For a sitting shot - just slide the bungee down to about half way.
I used to keep a Bipod on the rifle - I have now dispensed with it for woodland stalking as it was just unnecessary weight and 90% of my shots have be standing to get over grass etc.
Two sticks are very quick to set up, indeed if a very quick close shot is needed then just use them as a single stick.
I think the main thing when shooting off sticks is to practice, practice and practice some more - .22rf comes into play here along with a box of clay pigeons set out across a field. Lots of fun! Or if you have lots of rabbits - even more so
And my technique is don't try to go for a perfect sight picture - the rifle will never be absolutely steady - instead try to first focus your eyes on just the target - the heart -- and then bring the rifle up keeping your eyes on the target - the scope should be aligned, the cross hairs on target and squeeze all in one fluid motion and follow through. If you start getting the shakes, relax and start again. A 6 power scope is plenty - any more will just exagerate all your shakes.
Its a bit like shooting with a shotgun - bum, body, beak and squeeze. If you try to sight a shotgun you will always miss - at least I do.
I am totally happy with the above technique up to c70 yards and am confident that I can out a bullet through the vitals. If it is much further I will go for a solid rested position - preferably prone.
Admittedley the above technique requires a rifle that does handle reasonably well and fits you to some degree - mine does. I once stayed with some friends up north and they had a load of stags that had got into some birch / oak woods that was being regenerated. I wsa invited to go and cull any rubbish and persuade the others to vacate back out onto the hill. I didn't have my rifle with me so was as using the estate rifle - heavy barreled sako 75 in .270, with moderator hung on the end of standard barrel length, plus fixed 10 or 12 power scope - definately the wrong tool for the job. And there were several opportunities when if I had had my rifle and sticks I would have taken a shot, but trying that rifle to target was very slow - definately the wrong tool for the job - but it would have been ideal for culling hinds out on the hill, which is what that rifle is mainly used for.