I really loved Alan's stats about washing machines and drills and the idea of "you don't need to own a drill, you just need to use a drill." The same way there are cars you can rent by the hour we should be able to rent stuff like drills by the day, or if the person who keeps the drill is nearby, by the minute. We need to start thinking of ourselves as a community, and that we can have communal things rather than as individuals that need to own lots of individual things.
Just one example - my mother lives in a gigantic retirement community in Florida (which in itself is pretty interesting because, while it's not very walkable, people can get anywhere in golf carts, which you recharge overnight in your garage), and while I know lots of the grandchildren visit while on summer vacation, they don't all visit in the same week, so why not timeshare the walkers and the strollers and the cribs and the toys? The same way mothers will pass this stuff down to each other as kids outgrow them, why not create a community "toy co-op" for all the stuff you don't need 51 weeks out of the year, and won't need at all 2 years from now?