DOWNVOTES ARE TWO.
Animal Influence 20
Djinni Summoning 18
Elemental Command 21 - Power level close to the Ring of Three Wishes, but with personality.
Evasion 20
Feather Falling 20
Free Action 20
Invisibility 18
Jumping 20
Mind Shielding 21
Protection 20
Ram 21
Regeneration 19
Resistance 20
Shooting Stars 21
Spell Storing 20
Spell Turning 20
Swimming 19
Telekinesis 20
Three Wishes 21
Warmth 18 - A magic ring whose power is to make you comfortable. Not luxurious, perfect comfort, mind you; just kind of okay comfort. What next? Ring of Afternoon Naps? Ring of Reasonably Good Seating? Ring of Satisfying If Slightly Bland Food?
Water Walking 20
X-Ray Vision 16
Edited to add: While I stand by my complaint, at this moment, a ring of afternoon naps would get an upvote from me.