It takes 6 charms to make one coaster, so a charm pack makes 6 coasters with 6 charms left over.
Decide which charms you want for focus -- the triangles. Put them into 6 sets of 4, with lots of contrast within each set.
You will need 2 charms to form the base of your coaster. Place these wrong sides together. Lay it on your work surface for your base. The one toward the table will hardly be seen, if at all, and the one facing up will end up being the back of your coaster.
Fold your charm squares in half, wrong sides together, point-to-point, forming a right triangle. I pressed mine to keep that fold nice.
Lay your first folded triangle on the stack keeping the raw edges together, and the fold to the center.
Place the right angle of the your second triangle on the next corner. Always keep the folded edge, the hypotenuse, toward the center, and the raw edges even on the outside of the square base.
Lay the third triangle like so......
Lay your fourth triangle down in the same manner, but as you do...........
flip half of the first triangle over the fourth one.
This is what your stacked set should look like at this point.
Stitch all around, pivoting at the corners.
Trim the corners to reduce bulk.
Stick your thumb in the center to turn it right side out.
And voila! Your finished coaster. Easy - peasey!
Have fun making these!