/Finally, I have required enough info on the twins (Elladan and Elrohir). Actually there wasn't much, so I'm going apply a creative license./
Saruman was still getting over Legolas' girl problems, or rather, lack of. As he began to get comfortable again, his door burst open and two dark-haired elves strolled in. Both were wearing the same robes and were virtually impossible to tell the apart.
"Who are you" he asked.
"I'm Elladan, the oldest" the elf on the right said.
"I'm Elrohir and I'm actually the oldest" the elf on the left said.
"Why are you here" Saruman sighed. He could tell this would be another tiring session.
"Our father, Lord Elrond sent us here" Elrohir answered.
"He wants us to sort out our troublesome ways. His words not mine" Elladan added.
"And what are your troublesome ways?"
"Well, we like to-"
"Prank people" Elrohir finished.
"Why me" Saruman muttered incoherently.
"We were thinking, maybe it's because of our childhood" Elladan said.
"Nah, I think it's because it's so much fun to see the looks on other people's faces" his twin added.
"What ever it is, you should try to put yourselves in other people's shoes" the wizard suggested.
"Oh, we don't mind if people prank us. Hey Elladan, remember when Ada had arranged for us meet those two women and we were so shocked because we thought he was going to send us off to get married?"
"It still scares me" the other admitted.
Saruman made a face palm. He had not known that his fellow council member could be such a trickster, then again there was that one time where his voice went high pitched after he drank a cup of tea. He had always thought it was Gandalf, but it made sense that the culprit was the renowned healer.
"I think you two should try to slowly decrease the number of pranks you play. Start with three a week, and then work your way down to none by the end of the month."
"That's a good idea, but what happens if an opportunity pops up" one of the twins asked, Saruman had lost track of who was who.
"Don't" the wizard replied simply.
The two brothers began talking to each other and Saruman couldn't help but listen in on their conversation.
"Hey Elrohir, I found this gold ring on the path. It might be that Hobbit's ring, we should probably give it back to him" Elladan said, taking out a small golden ring from his robes.
Saruman leaned forward slightly. He could just take it-it was right there. He could tell them to give it to him and they probably would give it to him, or he could just grab it and run. His mouth was slightly open and small beads of sweat formed on his brow.
"Are you okay" one the twins asked with a confused look on his face.
"Huh? Eh hem, yes. Yes I'm fine" Saruman said quickly and leaned back in his chair and wiped his brow with his sleeve.
"No it isn't his. See, says here that it's the property of Glorfindel" Elrohir said, pointing to small elvish markings.
Saruman let out a sigh.
"Let's go return it to Glorfy."
"Thanks" Elladan said and the two elves exited the room.
Saruman sat there wondering if they had intentionally pranked him. There was a knock on the door, it was Elrond.
"I hope my sons did not cause you too much trouble" the elven Lord said.
"No, no. It was fine, no pranking. They're off to a great start" Saruman quickly answered.
"That's good. I brought you some tea" Elrond said, handing Saruman a mug.
The wizard blindly took the mug and took a sip from it. He opened his mouth to speak, but he found he couldn't say anything. The only sound he could make was similar to that of a frog. He looked up from his drink only to find the elf lord gone. Damn it, he thought.
/Let me know what you think!/
