Keep an eye out at Phsar Leu Market — you're sure to come across some unique curio in one of its many stalls. After you've had a good look at the wares, grab something to eat from one of the local food vendors.
This community marketplace is located in Mittakpheap. Once you've done everything you can at Phsar Leu Market, consider visiting nearby Otres Beach, Sokha Beach, and Ochheuteal Beach.