It depends on you and the tools you use. The example you give seems like a
Originally Posted by Rainbow6
someday/maybe item to me. You might want to:
have one someday/maybe item with ideas in the notes section
OR one s/m item per idea sprinkled in a big list
OR a list of ideas just for your iPhone.
Personally I have done a bit too much of the last possibility to recommend it. Excessive gathering of minutia is something I have to watch out for, and I have better things to do with my life. It is very important to weed lists regularly. Probably the best thing you can do with something like iPhone improvements is to put them on a list like
@Anywhere: Decide buy snazzamatazz for iPhone
and then decide and don't second guess.