Since we live in an older home, we were told by the rental agency that we must abide by certain rules.
Instead of Drano or harsh chemicals for the drain, try and heat up water in a tea kettle and pour it down the drain instead. Use wood safe floor cleaner as the floors are original (I'm doubting that claim actually) instead of the harsh Swiffer type cleaner.
And, for God's sake, use the molding around the top of the wall to hang your pictures from instead of punching holes into the wall.
We finally got around to doing one of the above. We went to Hippo Hardware to get the hooks that slip into the molding, and then to the fabric store to pick out the chord we wanted to use. We chose white for the main room and I absolutely love it.