This is exactly the reason I'd give all of these "Gods" specific "thematic" (non-combat for the worst part) powers in addition to the combat abilities; the Dryad, for example, should have power over plants and harvest, and maybe even weather. So people would worship her and give her offerings in return for her using her powers to bless their crops and maybe even bring better rains.
Yes. But, by adding powers, you're probably changing the CR of the critter. If you aren't careful, you change it pretty heftily.
For the Dryad, for example, how many spell-like powers are you figuring you need to add to make it work out? And how many of those aren't goign to make her tougher in a fight?
Not saying you can't do it. You certainly can. I'm just saying you have to be *careful* in doing it. If you aren't being careful, you quickly wander out of the realm of "small" gods. That dryad with weather control - why doesn't she just slap down a massive snowstorm when threatened, and get you a nice solid TPK from exposure?
sure, in real life you can't see the Kami themselves...
Many folks seem to gloss over that, but to me it always seems to be a major point.
There should be a major difference between worship of gods you cannot see, and worship of gods who walked into your tavern last week to get drunk - especially if that god is of limited power.