Do the "i's" have it?

This morning I was lying in bed (coughing as quietly as anyone can with a touch of bronchitis) and thought of a great post. The theme started with "i"... and I worked it all out in my brain what I would say. Except now I can't remember. Imagination? Was that it? I can't remember. Intuition? Inspiration? It's a total blank. Maybe I should just go back to bed. If I remember, I'll let you know.