My favorite is Speedy Baby II. I use the center square to embroider, fussy cut, or put pictures. It is great for signing too! The size is 45" square and really is fast. It uses 5" charms for the second border. Just google the name and there is a pdf of it to print out.
I make baby quilts, wedding banner quilts, and just sent one for graduation with the school mascot in the center.
I can make one within 2 days and it is so versatile.
Enjoy your charms,
Pam