Crocheted granny squares are a hit with crafters since there are so many different items you can make with them: blankets or afghans, scarves, potholders, wraps, totes…the ideas are endless! Here are several different designs to check out, use a single pattern for a project or mix them up as you like. I also added a helpful tutorial at the bottom showing you how to join them all together and another for how to make a flat border (for blankets).
You may want to bookmark this page for future reference since I’ll be adding new goodies here as I find them, enjoy!
: Petals are made with a cluster stitch and have a bit of a pointy tip.
Big Circle : Each ring in the circle is a different color, each background can have a different color if you like.
16 Circles 
: Wow! Love this design, 4 x 4 rows of circles (in same color but I love the dual colors in this sample).
Sunburst : Lovely samples on this page, actual pattern used is archived on the web here .
Pretty Flower 
: Simple to make and suitable for beginners. Eight petals on the inner part, 16 on the outer.
Circle : Circle design for the inner part of the square and features an inner scalloped edge around the first frame.
: There are several examples of how using different colored yarns can give each a unique look.
Two Shades : I like how this one looks using two shades of the same color for the center.
: Three rows of petal clusters, finished sizes will be different depending on the hook you use.
Two Layer Petals : Two layers of round petals lift up from the background in this pretty design.
: Two rounds are started then spikes begin on the third round and are worked on the straight edges only.
Maggie’s : Made with worsted weight yarn and size J hook.
: Instructions in both Spanish & English.
Center Flower : Starts with a Magic Ring, center design is surrounded by two different borders in two colors.
: Check the link to view a small blanket made with this, I think it’s gorgeous!
Bonus: Here’s a tutorial for How To Join Them  and another goody is How to make a flat border for blankets .