1 item per post, wait for two others to post before posting another.
Post an item from your shop that starts with the letter A, then another person will post an item that starts with the letter B, then another person will post item that starts with the letter C, and so on. When it gets to the letter Z, start over.
Heart a few above yours each time you post.
For difficult letters like Q or X you may skip them if you just don't have anything in your shop that will work.