Three Magic Rings

Ring of Reading: a simple gold band.  When you take the ring off and look through the band at any writing, you can read it, even if you're illiterate.  Does work on languages you don't know, but doesn't break codes or cyphers.

Ring of Epic Fumbles: an orichalcum ring shaped like a bunch of coyotes running in a circle, biting the tail of the coyote in front of them.  When the character wearing it rolls a fumble, any fumbles still happen, and they still fail, but something cool also happens that's positive for the rolling character.

Ring of Sweet Sleep: a star sapphire mounted on a band of gently undulating silver.  Wearing this ring makes you immune to any magical influences on your sleep and dreams; you are immune to the Sleep spell, a night hag's dream-riding, an inccubi's dream manipulation, or any other sort of communication-by-dreams.  

Image created with Stable Diffusion and GIMP.