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.
Cold Comfort is a long-sword of star-steel, its blade giving off a wan, blueish light. Its grip is wrapped tightly in snow-serpent hide, and its pommel bears a single opalescent gemstone.
This blade is enchanted in such a way, that whoever wields it, begins to fall completely and irrevocably "in love" with the weapon. This love does not manifest itself as the expected reverence and bond formed between any warrior and his weapon, but as a deeper, truer love, one has for a soul-mate of the same species! The longer the wielder carries Cold Comfort the stronger and more disturbing this love becomes, and only the most powerful of magicks can potentially break the sword's insidious spell. The blade's owner will even speak to and coo to the weapon, convinced that the sword understands and returns this epic love.
If the blade's wielder somehow loses the weapon or has it taken away, they will become inconsolable, and will predictably go to "ends of the earth and back" to retrieve it at any cost. Such is the weapon's curse that even separation from it does not damper the feelings the owner has for the sword. Legends tell of several distraught and mind-addled knights who even years after losing the blade, still wander the country-side searching for their lost love. And woe be to the "new lover" if and when they find him or her.