Pick a theme make it a color or subject and shoot that for a week, a month or whatever. It forces you to look for things. I used red

for February and with one photo left I'm happy with my results. They aren't prize winners but I learned a lot about the color and myself.
Like was said, use common things around the house and change the lighting add a backdrop of anything. Shoot things you never shot before flowers, household items, family members, pets, food even. Most of all look at the other PADs and learn to use what others are doing and try to figure out how they did it. Good luck!
tom