I found these at Joann's. They are laser-cut thick acrylic templates for making quilt pieces, either for rotary cutting or to draw around with a pencil or marker. They already have a 1/4 inch seam allowance added and cutout holes for marking the stitching line. There are several different sets for making Half-square triangles, diamonds, squares, hearts, etc. for making many different styles of quilt blocks. I really like using these, and they are so sturdy that they will last a lifetime.
After buying the one set at Joann's with a 40% off coupon, I thought I'd look them up on-line. There were many different sellers on e-bay that were selling them for about half of the price at Joann's. I'm happy to know that there is another source. The set that I bought was $19.99 at Joann's and with the coupon got $8.00 off. The e-bay prices ranged from $5.00 to $12.00, plus shipping. It would pay to look for the best price, and not just on e-bay.
These quilt templates can also be used for other crafting, whenever a shape is needed for something, so they are not just one time only tools. I think they are a good investment if you are getting into making quilts.
Edey