It means saving anything you still don't know if you want, need or are going to do something about, but it represents something that you find interesting or potentially useful to consider in the future.

What do you do with this kind of stuff? There are two options that can work:

1. Put them on the Someday/Maybe list, that you will be reviewing weekly.
2. Put them in a Tickler File, if you want them to come back to you on a specific date.

Both of these incubation procedures allow you to get the items off your mind right now and let you feel confident that some reminder of the possible action will resurface at an appropriate time.