You can use any one of these three steps to stay productive and close all your open loops. Keep your to-do list in the present, and you won’t forget about it!
Old-school: Use an in-tray.
Put all your mail, meeting notes, corporate reports, receipts, business cards, etc. in there, and start working your way through the pile.
Old-school: Utilize writing paper or pads.
Write down all the things you need to do, all your random ideas, etc.
High-tech: Use digital and voice note-taking.
Either save your pending work on your computer or smartphone, or leave yourself a voice message detailing what you still need to deal with. Alternatively, you can use email and texts to keep yourself on track.