If you have a step ladder that is tall enough so you can't see the top when standing beside it, be extra cautious about tool placement. Leaving a tool like a hammer on top is easy to forget. When you move the ladder, it could slide off and drop on you. The best bet is to use a tool belt to carry unused tools, either strapped to your waist or tied around the upper part of the ladder.
Fixtures, any kind of personal property that is permanently attached to a house (such as drapery rods, built-in bookcases, tacked-down carpeting or a furnace), automatically stay with the house unless specified otherwise in the sales contract. But you can consider anything that is not nailed down negotiable. This most often involves appliances that are not built in (washer, dryer, refrigerator, for example), although some sellers will be interested in negotiating for other items, such as a piano.