I do the same thing.
When I pile up more than two or three of these, I also have single-action lists for most of my work projects (as opposed to GTD projects; a single work project will usually generate many GTD projects), named "Agenda" as in "Widget Project Agenda". Agenda is entirely the wrong word to use for this, but I use it anyway.
That's where I put things that (1) I don't want to forget, that (2) aren't actionable, that (3) I want out of my Inbox, that (4) are associated with the work project in question. I guess it's essentially a someday/maybe list for the project.