Thankfully, I found one that I think I could live with: the Before Leaving Checklist from Hu2 Stickers. For around $22, you'll never forget the essential items you need during your day. I can't tell you how completely helpless I feel when I forget my phone, so having this little reminder stuck to the wall by my front door would be pretty invaluable. Of course, I could just make it a habit of tossing all my gadgets and essentials onto a simple charging station when I get home so I don't forget them on my way out. Decisions, decisions.