I've recorded some TODO items... for whatever reason, I find TODO a bit boring and uninspiring. Plus, I don't know when or if I will get to some of those things.
Instead (or in addition), I'm going to record wish lists. I will pick some items to actually work on and add to my TODO list.
I suppose David Allen would call these "someday / maybe projects." I've always found those to be a bog of ideas that I'll never get to.
Wish list has more power to me - it indiciates a desired future state in a particular area.