A basketball sized can that can diffuse up to a typical lightning bolt's worth of energy into gamma rays. In 100 words.
This ever-full, ever-surprising, ever-ridiculous flask contains a magical liquid that may be the best or worst thing you've ever drank. Handling with caution won't do you any good.
100 word magic item
The King always has the coolest form of transportation.
Combating any monster is often as simple as having the right tool for the job. The nightmarish lycanthrop is no exception.
These relatively plain silver rings allow the wearer to go unseen, unheard, and un-smelled and render the wearer completely intangible - but only to others who wear a Ring of Mutual Exclusion.
A longsword that lashes out in the hands of a graceful warrior.
The two gently-humming, crystal-studded blades are semi-transparent and sharpened to a deadly razor edge. The haft between the blades is decorated with brilliant multi-colored crystals. The balance and craftsmanship are perfect. You feel that these trusty blades will never fail you.
A world where most people know a few cantrips and even non-magical people can help to cast spells. Which is just as well because the big spells can only be cast with the help of large numbers of people.Most large spells tend to protect borders and stop earthquakes as they can be done legally, but there are those willing to cast bad large spells s well.A major part of law enforcement in this world is preventing evil magic.