The WordPress Daily Post’s Daily Prompt is Percolate.
Percolate seems like such a lively word to me. Something will always happen if you let it percolate for a while.
My grandparents used to percolate coffee. They had a metal pitcher (the coffee pot or coffee percolator) with a metal basket and filter inside. At the top sat a lid with a clear knob which gave a view of the coffee once the water started to boil. Liquid popped up and down.
The water was only lightly colored at first, but by the end they had rich dark coffee bubbling up inside, dancing away. It looked like it was trying to escape so many times over. One time it did. The lid popped off.
Let that percolate in your thoughts for a while.