

Brainstorm. This word gets used often, but just what does a person do to get their brain to storm? Where do ideas come from?
Everywhere and nowhere. All around you and only from inside you.
Our minds have a handy habit of disdaining lonely, unattached fragments of information. Sometimes all you need to do is juxtapose two wildly unrelated bits and then see what kind of connection your mind forms between them. You can give this process a nudge by intentionally sitting down with some random input (where's that list you made yesterday?), stipulate a time limit (set a timer, say 15 minutes?) and/or a length requirement (at least five sentences?) and GO.
Here's an example, below, if you need one... The words were chosen randomly from the dictionary:
I was the first person in our high school he told:
"I'm gay." I don't know what I expected when Phil sat me down
on the grass and then stared at his shoes, but this wasn't it. What I knew
then about gayness could fit in a fingerbowl. At least I knew enough to
know that this conversation was a crucible and what we were refining was
courage (his) and forbearance (mine). Still, my confidence plummeted; what
could I say? I was a pullet waiting for a skillet. "How do you—um—KNOW?"
was the best I came up with. "There was this Briton...." he told
me, shyly. That confused me since gayness was enough of a topic without
bringing in subtleties of nationality. The whole conversation became like
an oxbow lake, cut off from the flow of its beginnings. I mentioned how
once I had ridden through the lowlands of Scotland in a dense fog. "It
was almost like fairyland," I prattled, and then clapped my hand over
my mouth. What had I SAID?
(1 paragraph, 15 minutes,
9 out of 10 random words used)