Go one screen down from Link's house. Near the Fairy Cave, you should find a strip of grass with a soldier in it and a bush to the left. Run through the strip of grass with the Pegasus Boots. You should find a beetle (not very obvious) turned on its back. It should say "Fine take it, thief" and you should get a random item (not dungeon). Note: You may need to do this a few times. You can repeat this as many times as desired.