I'll have categories to choose from. Then everyone uses the same box/boxes (Regional rate A or Medium Flat Rate, whichever they have access to, both are pretty close on dimensions) & fills them full of items from that category. I'm going to say choose 2 categories to receive from minimum & probably 3 to send from minimum. I would say don't go over $10-15 worth of items to fill them. You get a person to send to & a person to receive from & no one knows who until they open their boxes.Do we send in a certain type of stuff silkie or just a mix? How much are we sending? And can I tell you what kind of stuff Im interested in?