Akimi Village

You'll need a post office to do this, which is on the top line of buildings, I believe after the house. You'll need to build a box in it, then fill that box with 300+ resources and send it to a friend via their totem. To get 300 resources, set an Akimi or 2 on harvesting and don't set their return point. They will harvest and drop the resources on the ground behind them. You then pick up the box and put it on a pile of resources and the pile will be added to the box. To see the contents of the box, go up to it and hit . The other account doesn't need to accept or anything, so this trophy will pop when you place the box. Just make sure that when you place the box, it makes a pop sound and there's a puff of smoke. It's easy to place the box down, miss the totem and not send the resources.

Easiest way to do this: Have a second account on your ps3. Play on that account (and add your main as a friend) until you get to move (when it asks you to plant the first seed). Quit, go back to your main account, then go to any available totem, assign it to the second account, and send the box of 300+ resources to it.

If you don't have a second account, then use the boosting thread to add someone.