It's shortly after 1 p.m. on a Saturday in Druid Hill Park. Several dozen young people, many decked out in trim-fitting athletic gear, gather under a pavilion.
A plastic storage bin is stocked with cans of Miller Lite and Bud Light. Two grills are smoking burgers and hot dogs. Justin Timberlake's song "Mirrors" mixes with picnic table chatter as a Frisbee zings back and forth during a game of Polish horseshoes.
These people have all volunteered to have a good time.
Since last February, Volunteering Untapped has held a volunteering event every month with a nonprofit, immediately followed by drinks and networking. An hour earlier this day, VU participants were...