Just follow Phahonyothin Road to the north as the concrete jungle continues in Rangsit. It has huge shopping malls and a hypermodern temple complex.
Phahonyothin is already a pretty exotic part of Bangkok, but if you want a more serene experience, try Ko Kret.
In the weekdays, when Chatuchak Weekend Market is closed, more cheap shopping is to be had in Pratunam.
