I almost never give out by-the-book magic items. I use Magic Set Editor program to create my own custom magic item cards - works great. Here are a few that I've created recently that my group likes a lot.
These two eye-related items where found on a Drow thief:
Drow Assassin Dagger's Eye:
Embedded in the tip of the hilt of a dagger, is the closed eye of a legendary Drow assassin. It takes one standard turn to mentally connect with the eye. On the second turn, the dagger is guaranteed to hit in the exact location (worked wonders last week when the dagger sliced through the throat of the guard trying to blow his horn).
Drawback: The thrower rolls a d20 - on a "1", the spirit of the Drow assassin can chose it's target - and it is usually a friend/ally of the thrower. Add +4 each time the dagger is used in one day (so if used for a 3rd time in one day, 1+4+4 = 9 or lower and the dagger spirit chooses it's own target).
Eye of the Witch
A simple, rough silver ring. When put on, an old witch's eye opens - the ring wearer can see all that is unseen: impostors, secret doors, etc.
Drawback: You must roll vs. the witch. Witch (DM) and ring wearer both roll d20. If the witch wins, the wearer sees all that is hidden, but has blinding headache - meaning they loose a healing surge, are blinded until saving throw, and normal actions are not possible because of the great pain in your head. For each additional time used in one day, the witch gains +4 to her roll.
Amulet carving of a tree -- will purify water and also give information about the water dependent upon a nature skill check (water's source, strength, inhabitants, etc)
Golden helmet -- light reflects off this helmet and blinds until saving throw when an enemy rolls and attack "1"
Folding Ship -- a simple wooden box that unfolds (and refolds) into a simple wooden one-sail ship.
Orb of Wondrous Illusion -- a small white flower that grows a shimmering small orb in it's center. This orb grows from a total size between 1 - 6 days growth. The user must take two turns to gently/carefully pluck the orb from the flower and throw it. The size of the orb's illusion is dependent upon it's size (between 1 to 6 squares). The accuracy of the illusion is a arcana skill check.
Bracelet of Boojum
A wooden bracelet made from the roots of the magic Boojum tree -- daily power: the bracelet transforms as roots grow and envelope the fist and forearm of the wearer. Gain 6d6 to any strength (athletics skill which involves strength) skill check. This has brought about some fun moments as well. Usually it is not an offensive weapon, but last week the wearer found himself on top of an enormous Star Wars Knobby Spider (highly recommended: used as a D&D floating snow spider) and used it to essentially burst the spiders belly. Much fun ensued.