Cut the grass and clean up yard (optional-adding mulch/flowers)

Move BBQ grill, and hoses into garage or shed

Move cars/trailers/boats from driveway and yard.  

Hide Garbage/Recycling  Cans

Clean and uncover any pools/spas

Straighten out deck/patio furniture, open patio umbrellas

Temporarily remove Realtor Signs

Remove any holiday-related objects or decorations

Remove any outdoor flags (any movement in the wind makes them appear blurred)

Remove personal items (if possible)