"Use a white light switch cover and decorate your own with sharpies!" Look, I tried decorating something with horizontal Sharpie patterns and it did NOT look like this. Also, do you really want to buy all those colored Sharpies? give your room color.
DIY hanging diamond decor by contributor Kathleen :: These use straws covered in silver muffler tape. She used cotton string, but fishing line works, too. All the dimensions for the straws are given for all 3 sized diamonds!