I’ve always loved zip lines. As a boy I even made a real zip line from my treehouse. Jack and Tess aren’t quite ready for that though, so I thought of this idea for a little zip line toy. I bent some paper clips and taped them to the wall, then tied a long string between them. Then bent another paper clip around an empty sewing machine bobbin, and weighted it down with some buttons. It works quite well, and it’s fun for the kids to load buttons onto, then watch them zoom down.