If you are traveling or wanting to go out and shoot, try this simple method to help you SEE where you are not looking. Pick a topic to shoot such as today I'm going to shoot SHOES. Get peoples feet on subways, walking, in motion, stopped. Everything you can think of from different angles. Even try get some way down at ground level. Find some where people are walking on glass and go underneath and shoot that.
Another idea is shooting weeds that are popping out of cement or something.
Try shooting something with a reflection whether it's in your house or outside.
Try shooting something with a shadow. All day long shoot shadows.
Traveling? shoot window displays.
Stuck at home? go around your house and stage shots in your kitchen or best of all with your kids toys at ground level.
My hope is that you train your eye to see things you don't normally see.