You will need newspapers, a strong bucket, a rubber mallet and a dowel about an inch thick. You will also need a concreted/cemented area to work on. Fold the newspapers and put 3 or 4 into the bucket and cover with water. The newspapers will probably float to the top so put a piece of wood on the papers.
If you have a leaky gutter with a bucket under the drip or collect rainwater in a tank it would be a great idea to use rain water for the logs.
The newspapers in this instructable were soaked for two days. One day is enough. If you want to speed up the softening process put a squirt of cheap detergent in the water.wingbatwu
suggested adding flour to the water which sounds like a really good way of helping everything bind together.