Alternate "Hiding the Ring" strategies

[Tuor of Gondolin]

However, if the ring could be kept relatively out of reach,
say moving it to different islands, but its existence
was made known it could foster enormous dissension
and greed among the forces of Sauron, including the corsairs,
and ringless Sauron is in need of such help.

Btw, about

I still am not sure as by what criterion you would define her as not earthly; embodied maiar

Agreed, how is Ungoliant any more or less unearthly than Melian?