Instead of giving your kids allowance money every week, make them “work” for it. Buy them a trash can with the “recycle” logo on it. Tell them that everytime they see an empty soda can or bottle around the house, they can put it in the recycle can. When the recycle can is full, take them with you to the recycling center to see how much money they have earned.
This not only teaches them the value of recycling, but it also teaches them the value of a $1. You can also buy them a piggy bank so that can watch their “allowance” money grow. Just make sure that they don’t go around picking at public trash cans looking for glass bottles or aluminum cans!