Walls
When is the last time you cleared out the cobwebs in the corner or wiped off those dusty walls? Stuff sticks to the surface of the wall, so they could definitely use a spring cleaning.
Instead of teetering on a step ladder try using your broom to reach the spots. Wrap a soft cleaning rag around the mop head and use that to reach up high.
Alternatively, if you use the disposable pad style mop attach a dry cloth and get to work.