Look at this cool row counter that Susan Bates sent me. You wear it on your finger (it's very comfortable) and you click the big button every time you complete a row. You push the small button to start over at zero.
I like it! And it's under $5. Sometimes when I am running, I run laps around the park... and I get lost in thought and forget how many laps I have run. I could wear this for running too! I love it when my worlds collide.
How do you keep track of your rows when crocheting?