Well, for the amulet, if it's a gift from a god of generosity it might just be some form of basic amulet. The PC was generous, sot he god was generous in return. If you want to stick to the theme, maybe it'll let the character do things like create food and water for others, boost the bonuses from taking aid another actions, or perhaps grant a small bonus to the wearer every time they cast a spell on an ally (say, a +1 morale bonus to all saves for 1 round). If they're higher level, maybe heroes' feast would be an option.
The dragonfly ring? Make one puzzle how to get through a thick stone door with an obvious hole. The dragonfly can get through it, but it's obviously not a lock so nothing to pick. Instead, just give the door an activation device on the other side. If touched, the door opens. Other people used summoned monsters to open the door; your PCs can just use the dragonfly.
Another puzzle. Have a room set up like a chess board. But some squares are trapped. If a living creature moves through that square, something pops up and attacks. The dragonfly can be used to find which squares are rigged.
Abadar is generally known as the God of Wealth. Somewhat similar to what you're looking for. Perhaps NPCs look upon the wearer favorably and it grants the wearer a bonus to diplomacy with good characters.
Searched the pathfinder wiki and found Lorris, an empyreal lord that includes charity, volunteering, and the disadvantaged in his portfolio: http://pathfinderwiki.com/wiki/Lorris
|
I suggest Lorris as well.
In this regard, I suggest an altered Amulet of the Abyss, with a substitution of the Agathion Empyreal Lord Lorris, as to what it is attuned to.