On a drizzly Saturday morning late last month, the basement of the New Paltz United Methodist Church was filled with old lamps, blunt knives, malfunctioning sound mixers, and balky zippers. About a dozen volunteers welcomed the broken goods and their owners to a worldwide movement that’s evangelizing new relationships between people and their things. Repair Cafés—free events where volunteers with technical know-how help neighbors fix myriad hous…