Some items that would be legitimately usefull in the real world, but are less usefull to a D+D adventurer:
Quall's Feather Token: Pillow
When activated, this feather converts into a normal, soft pillow. Very usefull for those who want to travel lightly.
Bracer of Holding
When you place an item against this bracer, it is held against the bracer by magic. One bracer can hold up to 5 lbs of items. Placing or removing an item from the bracer is a move action. A successful attack on an item held by the bracer will knock it to the ground.
Tableware of Cleanliness
This complete set of tableware (plate, bowl, cup, saucer, knife, fork, spoon) will make itself spotlessly clean when the command word is spoken.
Hat of Shade
This wide brimmed hat makes it's wearer immune to sunburn.
Chalice of Carefullness
When this chalice is filled with liquid, it cannot be spilled. All liquid will stay inside the chalice, even if it is turned upside down. You can still drink from the chalice as you normally would.
Blade of Grooming Safety
This razor sharp blade grants a +5 bonus to attacks against hair or uses of Profession: Barber. However, the blade is completely incapable of attacking flesh, and will pass directly through it without harm.
Mirror of Reversal
This magic mirror shows images as if it were placed on the exact opposide side of an object than the side it is really on (i.e. looking directly into it gives you a view of the back of your head).
Spectacles of the Index
These glasses are activated by speaking a command word, followed by any other word you are interested in. From then on, when you see that word written, it will appear to be surrounded by a bright light. This effect allows you to quickly flip through the pages of a book to find a specific word.
Deck of Shuffling
This deck of playing cards will randomize themselves when a command word is spoken. Only cards in physical contact with the user speaking the command word are affected. The deck is otherwise completely normal.