Carry a small digital voice recorder with you when you garden, either in your pocket or with your tools. Make “voice notes” of important things to remember, or to do later, as these thoughts come to you. Schedule a time at the end of each day to transcribe your notes onto paper or type them into the computer. These recorders cost as little as $15, are small (generally about 4” tall, 2” wide, and 1/2” thick), and lightweight (less than 2 oz.).