Determine remaining daylight on your hand. Use this simple trick to measure the remaining daylight without a watch. Count the finger widths between the sun and the horizon. Each finger is equivalent to 15 minutes, with each hand totaling an hour.
For camping or an emergency "Johnny on the Spot" when ya just gotta go . use a plastic bucket and place a pool noodle on top for comfort. You could put a plastic bag in the bucket then at the pool noodle, easy clean up