I have found the greatest tool ever for my block swap:

http://nixiechicks.com/index.php?cPath=37

quick and easy block reference tool, gives patterns for about 100 blocks and the rotary cutting directions for 5 sizes of blocks

go to nixie chicks and check out their 99 cent fat quarters too!

Sharon and her mom run this little store and give fantastic service. She doesn't carry a lot of stock, but it changes daily and sells fast because of her cheap prices.

What sizes does it include?

4, 6, 8, 10, 12, and sometimes 14 inch
and it costs $16.95
If you buy $35 from website you get free shipping

Sooo cool! I'll be getting it soon...

I have that too and I frequently use it. Not only does it give you cutting information for different sized blocks, but also gives information on yardage requirements for different sized squares or rectangles.

right now there is some free fabric there just pay the shipping. Have fun :D