I really like using a hiking stick of some kind. My current favorite is one leg of a shooting bipod. But in the past I have used ski poles, collapsible expensive hiking poles and wooden sticks. Sometimes I like one, sometimes another.

Get the cheapest thing you can find. Try it. You will see the advantages and gradually you will find what works for you. There are many $20 poles on the market now. Most are good enough for starters and actually they work quite well. I think even Wal-mart sells them now.