When they first hit you, your ideas are still far too abstract to be forced into a structure. Capture your eureka moment as it is in free-form text, and expand on it anyway you like.
Sometimes a picture is worth a thousands words. Sometimes a reference from the interwebz is worth even more. Power up your ideas with images, attachments and quick URL previews.
Your ideas need the validaton and feedback of people that matter. Invite collaborators to brainstorm together, and build focussed discussions around each idea.
Before you can act, you need to first extract the ideas that actually make sense. Identify which ideas make your team yell "Eureka", and which ones make you go "meh!".