You can purchase cheap tissue paper for gift bags. The sizes are 20x30". You can cut them to the size you want depending on size block you're going to make. I have phone books also and also use unscented dryer sheets previously used. I use the Seventh Generation that come in narrow strips (2 1/2"). They are already perforated but can still use them. One strip will do 2 large loads sometimes 3. They are worth the money. If first using on a small load tear the strip in half.