A large-scale drive at C. Richard Applegate School will ensure that almost 6,000 drink pouches never hit a landfill, thanks to a band of fifth-graders who wanted to help their community. David Lundy, 11, and a group of classmates -- Jordan Cerio, 10; Kelly Preston, 11, and Ella Kemp, 11 -- recently organized a large drive in which students were encouraged to donate used Capri Sun, Kool-Aid and Honest Kids drink pouches.    The pouches would then be given to the "upcycling'' company Terra Cycle, which collects trash such as drink pouches, candy wrappers and even used writing instruments to make backpacks, laptop cases and other products. What's more, Terra Cycle pays for the waste material they take in -- for example, two cents for every drink pouch they receive.