This was posted on a list for people who write grant proposals.
Because they also get stuck, they were posting solutions, and one was
a game to play to get the brain in a writing mode. I don't know if
this is considered a motivator or not, but I share it for what it is
worth.

Dianne

From the original message:

Nerd Test Make-a-Word game

http://nerdtests.com/ft_maw.php

It can be addictive so you must be careful. Making my head scrape
together word after word is a healthy distraction that brings
something to my writing when I'm struggling. And, yeah, I've made it
to super master.

Trudy Swenson
EDUCATION CONNECTION
Communications and Grant Writing