They Will Lose It

Tell me true. Does providing your kids with custom pens prevent them from losing them? Every year I buy a stack of pens. Every school year they are gone before the 2nd marking period ends. So I tried the pens with their names on them. That didn't work either. When asked the kids will say, oh yeah, so and so was using it the other day. They have my kids names on them! Other than tying them around their necks I guess I lose.