This one is simple and easy. I started doing this years back. I noticed construction guys would hammer in blades into scrap wood. We have all noticed the container at the DR's office. I now have my little ones in the garage with me and do not need the accidents. I am sure the garbage man would appreciate it as well.
Just use an old coolant jug and cut a flap in it, MARK what it is and you have a safe containment for blades or other small sharp materials.