It always seems to happen in the shower.
I come up with a brilliant strategy for one of my cases or remember something that needs to be calendared. (I read once that there is actually some scientific basis for epiphanies in the shower, having to do with ions or something.) I need to get the idea down as quickly as possible before the thought is lost, and I need to make sure I will see whatever reminder I create.
I always have my phone with me (well, not actually in the shower), so I could create a reminder or enter the idea into Evernote, but that assumes I will hear the reminder tone or remember to look at Evernote before the deadline occurs.
Enter Jotbox. I may not check my voice mail or see all the text messages that come to me, but I am always good about checking my email. With Jotbox, I just dictate a quick message on my iPhone, and with a single click the typed message goes off to my email. I also have the options to scribble a message on the screen, or even snap a photo (a picture of an empty shampoo bottle, perhaps, to remind me to buy more).
When I arrive at the office and check my email, I can then deal appropriately with all the reminders.
Incidentally, if you want, you can use your Evernote email address. Instead of showing up in your email, they will show up in Evernote.
I found Jotbox while checking out a similar program called MeMail. The latter program does not have all the same features, and is $2.99, whereas Jotbox is just 99 cents.