I have been a member for more than 3 months (joined Jul 5), so I would like to claim:
Membership Coupon - 3 months active membership. At 3 months and once a month afterwards, you may request a membership coupon good for 500g off any purchase in "The Store" board.
And then I will turn right around and spend it on:
Store - 500g - This purchase allows you to open a store with a 4 item inventory limit. Let me know which town you want to set up shop in, and you can make the stock whatever you like, rotating or changing as much or as little as you like. Please note, you cannot make money off these stores.