“In the place he makes his dwelling, having fed the astute and the virtuous here, the restrained spiritual practitioners, he should dedicate an offering to the deities there. Venerated, they venerate him; honored, they honor him. After that they have sympathy for him, like a mother for the child at her breast. A man beloved of the deities always sees nice things. ” (Sujato DN 16)
Offering to deities seems like a neglected part of Western lay Buddhist tradition. In the Buddha’s time it was a cultural norm, but what about today? How does one begin to identify which devas reside in which areas, and how specifically to make offerings to them? Especially in areas outside of India where such things are not well known. Every village in India has their own deity to which offerings are regularly made.
“As long as the Vajjis honor, respect, esteem, and venerate the Vajjian shrines, whether inner or outer, not neglecting the proper spirit-offerings that were given and made in the past , they can expect growth, not decline." (Sujato DN 16)
Living in the US, one idea that comes to mind is to look to the various Native American traditions that came before. Devas are long lived, so the spirits identified by shamans in the past would likely still be dwelling in those areas.
I also remember reading a sutta where the Buddha states that some dreams can be messages from devas, though I can’t seem to find it. I’ve taken this to heart from a few recent experiences, so another method might simply involve asking said devas to give instructions in a dream. Just some thoughts.
Also relevant: How to make a fruitful five-spirit offering, especially to ancestors and deities AN 4.61?