BTW, I often find rolls of adding machine tape hanging in bags at the Goodwill in the art/office supply section. I used to have a number of rolls that were being purged from my work but I gave them away when I took all the "craft" stuff out of the sewing room. LOL, didn't see this thread in time but I like the concept!
Alikigirl, looks like Huntannette is still on the board but not as active as she once was -- hopefully she will see this and reply. It looks to me like the quilt you like was made with even width strips of the background fabric and the pieced part. I'd guess they are about 2" wide, and so the block is somewhere around 14 x 16-18" ish.