OK I will need to think about it. I think I ran into this before. I am using linda Causee's book
http://www.amazon.com/Foundation-Qui.../dp/1402740417
Unfortunately she has tons of small blocks that are 4 in. unfinnished none 3 1/2 in. unfinnished and none 4 1/2 in. unfinnished. I know odd size the 4 in. unfinnished. Adding just 1/2in. , quarter inch all around sounds hard to me. You talked before about having a swap that we could use this book so I thought this was it. I need to see what I can come up with. Also thank you for pointing out we can use geometrics etc. I prefer the more thematic but maybe I can find some free designs online of the geometric or traditional blocks that fit the size requirements. How you explained the colors is very helpful. I had gathered all pastels but a dash of slightly brighter fabric will really add.