Materials and Tools:

acoustic ceiling tile (15"x15"), available at hardware stores (can be cut to size with a utility knife)
9" quilting square
medium to heavy-weight fusible interfacing
scrap fabric (velvet, funky colors and prints)
Fabri-Tac glue
backing fabric or felt, cut slightly smaller than the tile
18" of decorative ribbon
sewing machine
scissors
pinking shears
assorted brooches and buttons
heavy-duty flat thumbtacks
jewelry wire-cutters
E6000 glue

Steps:

1. Use the quilting square to trace and cut out four 9" squares of fusible interfacing.

2. Cut scrap fabric in random sizes and shapes and place on the adhesive side of the interfacing. Arrange the pieces of fabric to overlap with no interfacing showing.

3. Iron the fabric pieces to the interfacing using a dry, hot iron. Press down and hold to fuse the interfacing to the fabric scraps.

4. Using a zigzag stitch, topstitch over the edges of each piece of fabric, stitching them in a crazy-quilt pattern. Repeat for each of the four squares, trimming the edges to fit the fabric to the interfacing.

5. Lay out the four squares to make one large 18"x18" square.

6. Overlap the edges of two squares and pin together. Use a zigzag topstitch to sew squares together. Repeat with the remaining two squares.

7. Overlap the two sets of squares and zigzag stitch together to complete the large square.

8. Lay fabric right side down and place ceiling tile on top of fabric; there should be a 3" seam allowance on all sides of the tile.

9. Place a dot of Fabri-Tac glue on one corner of the tile. Pull the fabric taut, fold toward the center of the tile and press. Continue this process until all four corner are folded in and glued to the tile.

10. Place additional glue around the perimeter of the tile, and fold remaining fabric in center of tile.

11. Glue the ends of the 18" ribbon to the back of the tile, 2" from the top and 3" from the side edges; the ribbon will act as a hanger.

12. Cut a piece of fabric 15"x15" (slightly smaller than the tile) and glue to the back of the tile, covering the folded fabric to create a finished look.

13. Choose an assortment of brooches and buttons and remove all the hardware backings (pins and shank button pieces) with jewelry wire-cutters.

14. Using E6000, glue heavy-duty flat thumbtacks to the back of the brooches. This can be tricky, so make sure to lay it on a solid flat surface while it dries. Set aside and let dry for several hours.