Our Quilt Guild and the qualifications for our Quilt Show in the Rio Grande Valley are that it cannot be over 90 inches around. Therefore it can be long the narrow etc. or less 22.5 inches square.

Quilters Magazine Bitty Blocks is a nice place to check out. There is a discussion going on on the QB right now about that one.

Shirley Liby Designs has an inexpensive program that allows you to print a block as small or large as you want it to be and has an excellent selection of blocks. It is a program that I use a lot. Last time I saw it it was available on the EQ site.