I saw this pattern on a great quilting blog Must Love Quilts (it's an awesome tutorial) and I wondered if I could get 2 equilateral triangles out of each charm square. It's a little work but I did it and they can add 2 - 4 1/4" equilateral triangles to their cutting chart on the back of the charm pack.
You don't have to worry about the cut off corners because those fall into the seam allowances.
For the girl quilt I used the Must Love Quilts pattern. I love the cute heart in the corner. The quilt ended up being around 39" x 39". I love adding a solid color fabric to my charm pack to make it go further. In my case I used a variety of white on white fabrics.
For the boy quilt I decided just to do a miscellaneous pattern. The triangles are kind of tedious to sew but have a nice effect. I'm very happy with the way they turned out.
I'm excited to go top stitch them, I have a great ABC, 123 pattern I think will look great!