Every time I come to Thailand, I purchase a few trays of "takoh." These are little dollops of sweet tapioca and coconut milk in banana leaf "cups." Their name comes from the "ta" in tapioca and the "co" (koh) in coconut. They are incredibly good: sweet but not cloyingly so. The best place I know to get them is Aw Tor Kor Market.

Here's the section of the market where you can find takoh:

Here's part of the fruit section of Aw Tor Kor. Trust me: this is only a tiny fraction of the fruit section here. It's the best tropical fruit selection on earth.