Wherever you are, if you have a thought you want to record, how do you do it? What if it includes illustrations as well as text? What devices are ideal for this? Is dictation software good?
Some of my own ideas as far as devices:
* Pencil and paper - Pros: Lightweight, flexible. Supports illustrations and complex layouts. Cons: Hard to edit or search retrospectively. Low bandwidth text entry. Requires space to store. Easier to lose/damage than well-backed-up digital content.
* Laptop (e.g. MacBook Air, MacBookPro, or EeePC) - Pros: Fast text entry. Searchable and editable content. Cons: Unpleasant to carry around everywhere. Illustrations and complex layouts are awkward.
* Tablet - Pros: Fast text entry. Supports illustrations and complex layouts. Searchable and editable content. Cons: Unpleasant to carry around everywhere. No Mac tablets.
* iPhone (or G-1, etc.) - Pros: I've always got it with me anyways. Content in searchable and editable form. Cons: Low bandwidth text entry. Very small display area. Illustrations and complex layouts are awkward.
Short term ideas go in cheap little $1.50 notebooks. I hang on to them because I'm a packrat but I don't ever actively search in them. (I actually tried to prevent a coffee ring on my table the other day with a notebook, and realized that it had the feature list for BCC 1.0 in it.)
Long term ideas go into searchable storage because if you can't find them you might as well not have had them. My blog works fine for my business, since I don't believe in competitively sensitive information and because explaining to 3rd parties sharpens my thinking frequently. At my day job, where they will not let me just stuff my work product on the public Internet, we use wikis. If you haven't done this before, try it for a few weeks, it will revolutionize the way you work. ("How do we set up the test server environment?" "Ask Bob." "Bob quit last year." "Awww shucks." -> "How do we set up the test server environment?" "Did you search the Wiki?" "Oh yeah. But it doesn't mention what version of the DB to use." "Well, when you find it out, Wiki it.")