Maintain paths and walkways.
A safe passage to the garage or front door is always a good idea. If cracks are present in your sidewalks, I would fill these in now before water seeps in, freezes, and expands them. This will keep family, friends, and other guests from slipping on wet leaves, or even worse, snow or ice later on this year.
Prep your landscape.
Grass roots keep growing until the ground reaches a solid 40 degrees. This means you can still be fertilizing and keeping that yard green. Once the leaves start falling later on, removing them from the grass surface will keep the greens bright.
Put up motion sensor lighting.
It is always pleasant to pull up to your house and a light immediately greets your vehicle. This keeps intruders at bay and makes you feel safe. A motion detector light is also fantastic for those nights when you must take out the trash or run back outside to the mailbox.
Fix drafty doors.
Any cracks in the casing around the exterior doors lets that hot air escape. You want to fix these now and possibly add extra trim to enhance the curb appeal.