I don't know if this is the video I watched but I ordered an empty stamp case and the Little B measure thing and made one.....it works if you are interested. I'm not sure who's video I watched but they used the Little B perfect positioner for lining up stamps so I ordered that too and it works pretty darn good. But I already had a Misti and I use it but I have also been reading all the posts on different message boards about the Misti cracking around the hinges and across the top without much resolve from the maker so I thought well if mine cracks I want something else that works about the same.
The one I made uses the stamp case, craft foam, and the Little B perfect positioner. Much cheaper then a Misti.