Giving up stuff: In an effort to combat consumerism, Dave Bruno is taking a “100 thing challenge”: he aims by November 12 to have whittled his personal possessions down to 100 items. By personal items he means things that are totally his, not items shared with family members. And some things, like books, he groups together as a category (though he is considering trying to get his own library down to 100 titles). Bruno, owner of a Christian audio book company, is blogging about his efforts at a guynameddave.com.