[Update December 8, 2012: Jott is no longer available, but if you visit their page they offer some suggestions for similar services.]
Here's a neat brainstorming tool I've come across recently.
Do you ever wish you could "jott" down a note about a great idea, but you don't have a pen and paper handy?
Jott is a FREE mobile note-taking and hands-free messaging service.
I've used it to write a Top 10 article while I was out and about, and even to capture songwriting project ideas with my music therapy clients.
What's also great about Jott is that my ideas are emailed to my computer, where I can easily transfer them to my Outlook calendar, "to do" blog, or to another document or program. It helps minimize the piles of paper that can multiply on my desktop.
Quick Writing Prompt: Ideas are everywhere. Open your mind to them and capture them in the moment.