Noah's Garden: Restoring the Ecology of Our Own Backyards by Sara Stein. Don't know that I need to keep a copy around, but it's a good point-of-view about keeping one's yard both more natural and more native.
The Power of Less: The Fine Art of Limiting Yourself to the Essential ... in Business and in Life by Leo Babauta. Despite the title being at odds with itself, this one's a keeper. A copy will be going on the desk's short shelf next to
Getting Things Done. The companion volume,
Thriving on Less: Simplifying in a Tough Economy, is
available as a free PDF.