well, I think August is great time to open a new thread...
Each player visit the store of the one who posted the last message,
choose a favorite item in his shop and post it.
The idea then is that any player choose a favorite item from other shop,
and the next player like that go into his shop and will post one of his items.
In addition to discovering new shops (and to discover yours) you get a glimpse of what others like the most in your shop!