I posted my cheat for the HST on my blog.
http://sherbertcafe.blogspot.com/201...spy-quilt.html
AND... It is just plywood. I was actually his idea to make one cause he heard my mom saying she needed one. We bought one 48 inch long piece of plywood and had them cut it at the hardware store into 12 inch squares. We were able to make 3 for under 15 bucks... We would have made 4, but.. we only needed 3 and wanted to play with christmas presents! I took pics to post a tutorial on how to make it also, but.. it was pretty easy.