I have mentioned them in discord, mainly some items that have no use currently.
Dragon necklace - Salamander tamer (e) - Increased chance to catch salamanders OR more offensive range bonus when wielding the necklace and using salamander as a range weapon.
Diamond necklace - Necklace of Balance (e) - Gives luck during agility. (Same amount as Strung rabbit foot or lower amount.)
Ruby ring - Ring of forging (e) - I would suggest 5% chance do smelt another bar / 5% chance to forge an additional item OR maybe a bit extreme but 40% chance to reduce 1 coal usage while smelting. (Only working when using a furnace, if possible.)
Dragonstone ring - Ring of wealth (e) - Could be some kind of coins sack? (Limited amount or not?) Collect coins directly there and empty to inventory. 5%-10% coins are sunk when collecting there.
Should they have charges or not, I have no idea.
I don't have any idea about numbers - bonuses, chances. I would leave that thing for Thomy (Illustrative bonuses and chances there.)
I have to admit that making suggestions ain't that easy.