I love fall and I love colorful leaves. They make for such interesting shots! Being farther north, fall hit Minneapolis earlier than it hit Virginia so I got to go leave hunting while there. I noticed leaves scattered on a wooden walkway along the Mississippi River and realized it could make a cool shot. I found a leave I liked and cleared a spot on the path. Laid it down symmetrically and fired off shots before the wind could blow it away! All I needed to do edit-wise was a hint of straightening to get my lines truly vertical.
Symmetry can make for very interesting shots. If you have something symmetrical (or mostly symmetrical) like a leaf, try finding a symmetrical background like I did and center it. Or you can take a non-symmetrical object and put it on a symmetrical background. The lines between the boards above also add interest.