I have a mate whose pickup is in his son's name and his son is now 11 having owned the pickup since he was 9.
I also know an ethnic Burmese lady whose 9-year-old Thai son owns her house as she being a foreigner cannot own it. ( yes I know the house and the land can be split)
Gilette three-blade blue razor from 7-Eleven. 98.8% rigid as the two parts are molded separately and then assembled. But it definitely does not "swivel"
Not seen here, as in Indonesia, using the waste heat from the AC to heat or preheat water. Put a copper coil in a tank and connect it before the heatX in the outside AC unit,
Well, he's not in Chiang Mai but if you contact him I am sure he will recommend someone hear you. He does go upcountry to do group lessons.
How to contact him? Use the internet and your grey matter.