First, thanks for visiting the site! Second, I want to ask you a question. How many times have you thought of an idea, errand or task while driving or otherwise out-and-about and completely forgot what it was when the time came around to make it happen? I do carry a notebook for these sorts of things, but given that most of my work is in front of the computer, I've found something even better. Earlier this year my co-worker introduced me to an amazing service called Jott, and I haven't forgotten anything since. Here's how it works: you sign-up for a free account, program the toll-free Jott number into your phone, and voila! Next time you think of something while you're away from your computer, call the friendly Jott operator. She'll start by asking, "Who do you want to Jott?" and you'll say "Self" (sign your friends up so you can harass them too). When you hear the tone, leave your message. Jott takes it from there and transcribes your message into an email, waiting in your inbox for the next time your ready to take action.
I can't tell you how many times this has helped me remember and be proactive about ideas I have at random moments. Plus, it feels like I have my own personal assistant!