Although I haven’t tried this, I know that some authors use a stream of consciousness method to generate story ideas. For this prompt you find a spot to sit, place a pad of paper in front of you, and then write down whatever comes to mind. At some point one thought will lead to another, which will lead to another, and another. When you think you have enough ideas in front of you stop and look them over. Most of it will be a jumble of words, but a pattern should emerge that you can form into a story.
Here are five words/concepts to start the stream of consciousness flowing.
A doodle of a daisy
An arrow pointing up
Sound of a clock ticking
Based on the sound of a ticking clock I generated the following pitch.
Clockwork War – Anthony has less than a month before he musters out of the army. Then during a routine patrol he runs across an enemy that makes a strange ticking sound when it moves. This strange mechanical army is marching towards the village where he lives. He must find a way to stop a seemingly unstoppable foe before everything he loves is destroyed.
(This was my train of thought that led to this story. Clock – clock in croc from Peter Pan - creatures/people walking with clocks in them.)