I thought some of them seemed very useful. I liked the invention to lift manhole covers (http://images.businessweek.com/ss/08/06/0627_fresh_entrepreneurs/6.htm

I thought some of them seemed very useful. I liked the invention to lift manhole covers (http://images.businessweek.com/ss/08/06/0627_fresh_entrepreneurs/6.htm http://images.businessweek.com/ss/08/06/0627_fresh_entrepren...) and the BidMyCleaning.com idea (http://images.businessweek.com/ss/08/06/0627_fresh_entrepreneurs/10.htm http://images.businessweek.com/ss/08/06/0627_fresh_entrepren...).