SINCE 2001!! Boston CraftWorks is the most comprehensive site on the internet for kaleidoscope kits and parts for hobbyists, artists, students and everyone else! We have other crafts too!
We are going to add a full range of glass and acrylic disks. For now, we are adding what we have - some of these are in limited quantities for the time being. We will be adding more sizes soon. Here are the diameters of what we have currently: