If you like haggling for the best price, you might want to head out to Don Wai Market in Krathum Lom and take in the atmosphere. Why not take a stroll along the riverfront and watch the sunset while you're here?
If visiting museums in Nakhon Chai Si are on your list, you might want to check out the upcoming exhibitions at Film Archive. If you want to see more of the museums in Nakhon Chai Si, Jesada Car Museum isn't far either.
If you want to give your credit card some exercise, head out to The Paseo Park Kanchanaphisek in Sala Thammasop. Splash some more cash at Khlong Lat Mayom Floating Market.