
Another nice way to use up those scraps you are collecting. For the template for the centers, click on the links highlighted in red for "middle 1" or "middle 2". You can just add pieces, ironing after each piece is sewn on. For crazy quilting, I use pre-washed bleached muslin (I buy it by the bolt from Jo-Ann's when on sale and I have a 40 or 50% coupon) for my foundation blocks.
If you wish to change the size of the center template, just increase or decrease the size on your printer.
http://www.azpatch.com/bom/bom2003/08aug03/bom03aug.htm
Once you complete your blocks and want to stretch your wings on other projects, check out this link for more free patterns:
http://www.freequiltpatterns.info/QuiltCategories/FreeCrazyQuiltPatterns.htm