This sounds like fun!
My understanding - we are given someones name and what kind of block they would like you to make. Your name in turn is given to someone to make a block of your choosing. What a great idea!!!
I will think about what I would like to do and check back in with a PM!
I am so happy you 'stole' the idea from another board! The bonus is that sending one block is like sending a letter! Minimal cost!
Be back soon!