Guess it depends on what you want to photograph.
It only takes a small tree or green bush to make a great portrait background. What's in your garden, or the neighbours garden, or on the street.
Sit the subject on the grass and shoot from above. Doesn't matter that you are standing on a step ladder and the road is only inches away.
I read in a magazine a while ago about a challenge - peg out a 2m x 2m square in your back yard and take 100 photo's. these would be macro photo's but it's amazing what you can see when you change your perspective.
Or pick a spot, any spot, and then challenge yourself to take 100 different photo's without moving from that spot. This forces you to "see" what is there rather than just saying "I have nothing to photograph".
This can apply inside as well as outside.
Good luck. Happy shooting
Sally