Yes, that's the best way. The temples have been the leading providers of food (and sometimes, although rarely, money itself) to thousands of people here in Chiangmai. For example only and although it's beginning to decrease, Wat Lok Molee alone has been providing a daily meal to 700+ people per day for weeks. If you stop at a temple, they will tell you what they need, be it food (oftentimes they have plenty of rice and other foodstuffs) or other items (plastic bags of particular sizes, paper/cardboard food containers, plastic spoons/sporks, rubber bands, etc.). There are and have been a huge number of rather desperate people out there attempting to get at least one decent meal a day for themselves and their families and several of the local temples admirably have stepped up to fill that pressing need.