NEW YORK - Lego is looking to keep its plastic bricks out of the trash. The Danish toymaker is testing a way for customers to ship their unwanted bricks back and get them into the hands of other kids. It said Tuesday that customers in the U.S. can print out a mailing label on its site, dump their used Lego bricks in a box and ship them off for free. But some have asked for another way to donate them, said Tim Brooks, Lego's vice president of environmental responsibility. It too has said that finding a material to replace the plastic in its toys has been tricky.