Where do all the good posts go?

I'm walking into town, enjoying the fresh air and the greenery. It's streets all the way but with pretty houses and gardens, and hedges between the pavement and the road. There are two houses joined across the road by an archway. As I walk, I turn over in my mind what to put on this blog next. Ideas swarm into my head and I write two or three killer posts before I get into town.

I have a look round the shops and wander back. I get home. I sit at the pc. My mind is completely empty. Most people have to practice Zen Buddhism for years to get a mind as empty as mine now is.

Where do all the good posts go?