Glasses of Magic Sight
While looking through the glasses, a faint aura appears in the presence of magic within 30 feet, akin to the Detect Magic spell (no action required).
You also have disadvantage on Perseption checks and Investigation checks while looking through the glasses as the magical aura of the Glasses of Magic Sight obscure your vision.
Side note: This is more or less a simplified version / original intent of a Magic item in a game I'm playing in. Though as of now in that game it works through activation (i think, and its probably an action like Detect Magic) but as it is a prototype on each activation the user needs to roll a d10(?) to see what happens out of the following things (can't remember the exact odds for each, also probably forgotten a couple effects)
Nothing happens
Activates as expected
The aura emitted from magical sources is blindingly bright
The glasses help you see Magical things by making anything that's not magical invisible to you
Implement it as you wish. I currently flip a coin at the start of each day, and depending of that, it's good or back luck for the day. Never communicate which, let the player using the ring find out.
A bench which increases your intelligence to 30 so long as you're sitting on it. It isnt so heavy that it can't be picked up, but it is quite cumbersome
Something with a very niche useage like a Wand of Ring Detection; starts with 4 charges and regains 1d4 charges at dawn, expend a charge to become aware of any and all rings within 30ft.
Would usually be useless, until the one time you can use it to recover a lost/stolen ring or become aware of someone hiding their powerful magic item!
Or when they start using it at random and become aware of random little trivia of NPCs around them!
Also, chain mail would be obnoxious to someone using the wand!
I always try to have 2 Immovable Rods with my character so I basically have an infinite ladder. You can lock and unlock each rod and use them like rungs to climb things, cross gaps, etc. And they're not really rare or expensive.
Maybe add the opposite of those; rods that never stop moving.