Here's the general guidelines I copied from one of the previous swaps:
SMALL QUILT SWAP GUIDELINES
• SIZE: from 12” x 12” to 24" x 24"...any size or shape in between. If your finished quilt ends up a little larger, smaller, longer, shorter, rectangular, wonky, etc...no worries. The quilt police will NOT come hunt you down!
MATERIALS: natural fibers/cotton, wool, linen, something that you would like to receive.
EMBELLISHMENTS: Feel free to use them if you wish, if you choose not to, that’s fine too! Use your imagination and just have fun.
CONSTRUCTION: Pieced, appliqued, yo-yo, whole cloth; quilted by hand or machine and bound, except for crazy quilts which are traditionally tied.