Stuck

Oh my goodness.  I am stuck.  I have all these thoughts and ideas for blogs but when I get a chance to sit down and type, they are gone.  I have a few unfinished ones saved, one from 3 days ago, that I can't even remember what I was going to say about the topic.
I have been given the idea of writing ideas down as they come, but usually they come when my hands are otherwise occupied.  When I'm driving, washing dishes, showering, ect.
What do you do to remember the topics you want to write about?