Not all magic items are for humans. Rewrite of my original and premiere submission, Horse Brass
Once upon a time this sword may have been a sight to behold, but no more. Rust and decay now tarnish the metal of this forgotten relic, and those who stumble upon it are more likely to toss it than use it.
Based off of the Rubik's Cube, the Emote Cube is a banned piece of arcanotechnology
Ah, you are awake now I see. Wondrous news. I realized that you have no idea what is transpiring so I will be blunt so you may understand it. It is rumored that you are one of the best jewelers and metalsmiths in the region and for that you are lucky enough to have been chosen to create an item that will change the world. And afterwards, you shall be set free. My word on it.
An unassuming sewing needle, five to six inches long. Certainly nothing out of the ordinary.
A suit of dragon scale armor created from and psychically linked to a still-living dragon.
Sometimes, you just want to accept that something tastes good without knowing how it was made.
The Sperry-Colt 7.5 cm automatic rifle, standard weapon of battlemechs for the Atlantic Federation
Magic, by its very nature, would greatly help not just the PCs, but the masses, too. Here are some magic items that the commoners's use.
A mail order tank, interstellar war, the engines of galactic commerce and nostalgia.
A sword with a mission
Chrome is the one of the most popular Superbrands in the Cosmic Era
Six gruesome blades forged from dwarven blood in the pits of ancient bol-Pakash. Six knives the dwarves wish never existed.
The ultra minimalism mech, for the common consumer
A toilet that teleports your feces onto the PottyPortal's Poop Hill.
The best way for a traveling dwarf to sleep is on a bed of stone - Bodrick Rocknumber, stone bed salesman
'Cmon and drink up. This potion will really help us understand each other, if you know what I mean.
A standard crowd control/riot shield
While traveling trough farm land the PCs come upon a merchant sitting on a wrecked wagon without a mule attached to it, hid face burrowed in his hands. He explains that he was robbed by petty goblins, unable to defend himself he had retreated. He asks the PCs to help him retrieve the mule before the goblins roast it, as a reward they may keep his goods. How hard can it be?