Hands (or fingers!)
I used this method during NaNo 2007 and it worked. Why hasn't it worked in '08 and '09? Simple.
I wasn't the only one in the house anymore.
For me to truly be productive, I need an empty (and clean) house; the music on; no other commitments. It also helps if the creativity is flowing, although a page or two of meaningless crap is okay. I can always edit it out later.
Sometimes being productive simply means getting my last load of laundry in the washer before noon. Or the 'business' side of my job (blogging, email,) accomplished in an hour instead of two. It all depends on my mood, my goals, and whatever the spouse has planned for the day.
I'd just like him to go back to work so I can FEEL productive, instead of taking a stab at it.
Y'know what I mean?