Question: Is there wiggle room in the D&D rulebooks for certain magical items to only be usable by certain individuals? And I don't mean like "you need a certain level modifier to use this without a penalty" I mean on an individual character level.

You hear about weapons of legend all the time that can only be used by "the chosen one" but I guess basically what I'm asking is is it possible to have an item created or crafted that uses that kind of magical logic on purpose for your own belongings?

yes you can create a magic item usuable only by yourself (without a Use Magic Device Check to fool it) for a 10% discount in crafting price.

Heh. Magical weapons that only one person can use? Isn't there a way to bond weapons so nobody else can use your +10 adamantine, silver, and cold iron alloy greatsword against you?

Anyone letting you use a +10 adamantine greatsword is asking for it

Why alloy the materials when you can take the Metalline enhancement? That way you can hold more stuff out of combat by keeping the sword mithral until a fight then change to whatever material bypasses damage reduction.

Why alloy the materials when you can take the Metalline enhancement? That way you can hold more stuff out of combat by keeping the sword mithral until a fight then change to whatever material bypasses damage reduction.

Yes, but most ways provided in the rules can be circumvented with a high enough Use Magic Device check to bluff the magic boots that, "No, I'm totally an elf, sucker."

Fooling the boots into thinking you're AN elf is one thing, fooling them into thinking you're ONE elf in particular is more of what I'm asking about.

Fooling them to think you're one paticular elf is +5 DC to the UMD check not paticularly difficult.

There's also a 3.5 supplement called Weapons of Legacy which has special rules for items that only work for a person who's 'bonded' with them. The weapon (or other item) grows in power as you advance character level,gaining various abilities along the way (one of my favorites allows scorching ray at will), but there are some trade-offs associated with them as well

Well, if I recall correctly, there is a method for doing exactly that in the DMG 2, in which you perform a ritual that both grants your item its abilities and bonds it so that no one else can use it. I can't remember how that interacts with Use Magic Item checks, but I know you have to go through more specific hoops to complete each respective ritual...like purposefully failing a save against a spell that has the potential to kill you and tanking it. Or fighting an opponent of your level or higher in nonlethal, honorable combat.

Magical Device Check, surely nice, but is such item worth trouble if it is enchanted only be usable by... let's say... someone who is into small animals? Or having other, hm, interesting and unusual qualities? Can you really claim you can use it because you passed required check?..

I would make them determine what they are trying to fool the magic item before letting them make the roll. So maybe give them the side quest of lots of research, travels to epic libraries and bribing wise sages.

I'm calling it: His cigarette is a magical item, possibly a minor artifact. Okay, prolly not artifact, but certainly powerful.

Nah, just a +1 lollipop of invisibility.

That last comment is probably referring to a magic item that connects Sanji to a certain family...