Chao Phraya Express boat north to Nonthaburi Pier, then catch the small ferry to Koh Kret island. Total cost ฿15 for boat ride, plus ฿5 for island ferry. Koh Kret's this man-made island where Mon people have been making pottery for 200 years. Watch them work, buy pieces directly from artisans, bike around the island in about 2 hours. Weekend floating market has proper local food, not tourist versions. Early morning for cooler weather and better ferry schedule.