How do I get more rocks on Harvest Moon Tree of Tranquility?

Rocks, branches, stumps, weeds, and herbs etc, will all randomly appear every day. How much of the island have you unlocked? If you go to the woods beside the forest everyday there should be few boulders each worth 4 stone. For easy cash I suggest you start buying silk worms, a barn and a yarn maker. Silk worm lay cocoons every 3-4 days. You can put these in the yarn maker to make silk yarn. If you stick this in the dye pot with a blue herb you get blue silk which is worth a bit. I would advise you to go to the mines and only pick up wonderfuls that sparkle (check your inventory for the sparkles once you picked it up) the more sparkles the better the gem. Take these to get them refined at blacksmith. You need to have trigered the event at church to do this though. E-mail me if you need anymore help.