Fed up with your child losing their Chewy Tube ! Use this clip to attach a small safety clip lanyard (I used one from Sensachew). Goes on very firmly and is very strong, so not easy for your child to remove again.Should print really easy on any 3D printer as orientated in STL file. Print with rectilinear infill at 100% and it is super strong. Do allow to cool completely before removing from build platform, especially on a heated bed.