Mr. Bamboo Straw
a bit shorter than the plastic straws is 25 cent (17 cm), 20 cm is 50 cent ( the same length as the usual plastic straw), and 25 cm is 75 cent, it is a bit longer than the plastic straw.
Jeff (Maison 557)
Saarti shop have these bamboo straw in stick in Kandal Village
Cane Fiber Containers
Cambodia Disposable Eco-Packaging
Disposable Packaging (Cups, take away containers)