At the moment, I am utterly exhausted. However, sometimes being exhausted takes away some of the strict control most people have over their thought processes when they are fully awake. In fact, sometimes if you are trying too hard to write, you lose some of that primary process thinking - the visual images, the full breadth of your emotions, or the child inside you. It's like when you are just waking up from a dream, in which there may have been a number of absurdities, but everything nonetheless made sense.
Today you will try and let go of your conscious thought and write down images as they come to you. Start with a dream you may have had, writing down as much descriptive detail as you can. Include as many of the 5 senses as you can, and then, thinking as little as possible about it, start writing whatever continuation of the dream makes sense to you.
The easiest way to do this is perhaps to treat it as a free write - set your timer for 7 minutes and just start writing, trying not to stop. If your brain keeps getting in the way, you can try meditating, yoga, a quick nap, or even a glass of wine - (but not too much! you have to be awake to write! If you're not sure if you've gone too far, see Samuel Taylor Coleridge's Xanadu. He wasn't able to finish it, because his opium trance had warn off. Tragic, yes?)
If you would like to go a step further, after you've emptied your visual (tactile? olfactory?) experience onto paper, you can try putting it into some kind of loose structure, like a poem. See, again, Xanadu.