Ability Rings is a mod with a collection of rings that give the player different buffs.
Please note that this is my first serious attempt at making a mod since the days of 1.12.2, and my last published mods on Curse were for 1.10.2. I've become a far better programmer since then and I am glad to share a new mod with the world.
Items:
Ring of Flight: When placed in the player's hotbar, it consumes an item specified in the config (default is a Feather) every X number of ticks (also configurable - default is three seconds or 60 ticks)
Ring of Saturation: When placed anywhere in the player's inventory, it will keep the player fed by giving the player a Saturation effect.
Ring of Swiftness: When placed in the player's hotbar, it will give the player a Speed Boost, a Jump Boost, negate fall damage, and give the player step-assist. This was inspired by the mechanics of the Cloud Boots from the 1.6.4 & 1.7.10 Chocolate Quest/Better Dungeons mod.
Ring of Healing: When placed anywhere in the player's inventory, it will give the player Absorption and Regeneration. 
Blue Orb: Crafting Item for the Ring of Flight
Red Orb: Crafting Item for the Ring of Healing
Feel free to use this in any modpack and you are also free to make the recipes more difficult with something like CraftTweaker, or just by editing the JSON files in the DataPack.
Planned Features:
* Add more rings
* Add support for the Curios API in a future version so that the player can utilize the rings as accessories
* Possibly a customizable ring that the player can add different abilities to