Quickie one here. There are two sources: my best friend came up with the new keychain thing and my cousin was always going on about wanting to use two keychains.

Expensive

"Damnit!" Sora cursed uncharacteristically. He held the Keyblade across his lap. In a tight fist, he had a chain with a small charm at the end. "It broke!"

Leon glanced over. "How did you pull that off?"

"I don't know!" Sora slammed his knuckles on the stone wall. "All I wanted was to see if I could combine two of these together."

"Why?" Goofy looked confused.

"Because this one's not strong enough but I like how it looks." Sora was again trying to make the free chain attach to the one currently on the keyblade. "You all know I need my weapon to look cool."

"The important thing is it works." Cloud commented softly.

"Says the guy with the Swiss Army sword." Sora rolled his eyes. "You and Leon have, like totally awesome blades."

"So why not stick to using one of the keychains we gave you?" Leon asked.

Sora shrugged. "Those are good but, like, what if I could combine them? Like Cloud and yours would be really awesome."

"Yeah." Goofy agreed with a nod. "That would be really cool."

"But the Keyblade isn't designed for that." Donald protested.

"I know." Sora sighed. "You know what chain I really miss? The one Sephiroth gave me. That one totally made Oblivion look pathetic."

Cloud narrowed his eyes. "Sephiroth gave you a keychain?"

"Yeah. At the Coliseum after I beat him. It totally kicked but!" Sora grinned wildly.

Before Cloud could make a comment Leon knew would start a huge fight, he suggested. "Why don't you see if the Moogles can do something?"

Sora's face lit up. "I completely forgot about them!"

He jumped off the wall and ran down the steps, Goofy and Donald close behind. They passed Scrooge, who looked rather surprised when they didn't stop. Sora slid to a halt before the Moogle who floated in the Marketplace scouting out customers.

"What can I do for you, kupo?"

"I want to combine these two keychains." Sora held out Fenrir and Sleeping Lion.

"Those aren't compatible."

"Huh?"

"They can't be combined, kupo." The Moogle tilted his white head in thought. The ball above his head bounced a bit. "However we could copy the properties of both and create a new keychain, kupo."

"Oooh, really?" Sora grinned widely. "Cool! I want that."

"Okay, kupo!" The Moogle began running through a long list of materials. Sora only knew about half of them but he figured he could find them easy enough. He was always finding odd gems and shards and such. "So it will be 8500 munny."

"WHAT?" Sora shouted loud enough that even Scrooge heard down the way. "Even if I get all the ingredients myself?"

"That's the price if you get all the ingredients. It will be much more depending on what we have to provide."

Sora slumped over. "Great."

"Well, how much do you have, Sora?" Goofy was fishing through his pockets.

"Uh, well," Sora scratched at the back of his head. "I kinda lost all my munny."

"Wha!!!!" Donald squawked. "How'd you do that?"

"Playing cards with Jack."

"Never play cards with a pirate, laddie."

Sora turned in annoyance. "Yeah, bit late for that advice now, Scrooge but thanks."

The spiked hair teen sighed. "Oh, well. It was a cool idea."