The mere notion that we could be overly generous in our offerings to THEM is ridiculous. The Gods and Goddesses, the Ancestors, and yes even the land Vaettir ALL make our very existence possible; without Them or Their blessings we wouldn’t exist at all. We can NEVER offer enough to make up for the very gift of existence They’ve bestowed upon us.
If we look to antiquity, we do see examples of major sacrifices in ancient rites and we can glean other practices in the daily bits of folkloric tradition that survived to more recent times. We also see an elite priesthood mentioned in Hrimskringla whose sole function was to serve the Gods, and we can see a variety of other persons in religious roles (magicoreligious, judicioreligious & politicoreligious) throughout the breadth of the lore for these cultures as well.
But it’s impossible for us to ever be more generous than THEY when it comes to us bestowing gifts upon the Gods and Goddesses, the Ancestors, and the Vaettir.