Writing very, very short poems like this can be a great writing exercise. Can you condense an observation or experience down into just two or three lines? Or what about stringing a series of very tiny poems together to form a short sequence? I'm also reminded of Laura-Marie, a poet who sometimes shapes poems by writing just one line a day until the lines add up into a poem that feels finished.
I know I've written about similar (if not the very same!) writing exercises before, but that's because I think they work. :)