Babies were fascinating creatures, Ferb thought. The whole world was a new place for them to explore. It was unfortunate that most of them lost that drive to explore as they got older. Ferb was glad he'd kept his, and he was even more grateful that he had a brother who felt the same way. Their new baby sister could be a perfect partner for them someday if they encouraged her; Ferb was sure of it. He was also sure Candace would not be happy with more of her siblings finding outrageous things to do, but it would be all right. Ferb would certainly never let his little sister get involved with anything dangerous.

Giselle Elizabeth Fletcher was a very alert baby, with wide blue eyes that were examining everything around her. Ferb new from reading that newborns were very nearsighted, so he carefully taped a family photo to the inside of her bassinet, right within her range of vision. That way, she could see her family even when they weren't standing close enough. Though she was only two days old, Giselle pretty much had everyone in the household wrapped around her finger already.

Ferb reached out to stroke his sister's light brown hair, telling her, "You are going to be one very spoiled little girl if we're not careful."

"Oh, heavens, I hope not," Candace said from behind him. "We don't need another one like Jeremy's little sister running around."

Ferb shuddered at the thought. "I should say not. That child is a terror."

"Tell me about it," Candace sighed. "I'm going to have her for a sister-in-law someday." She reached into the bassinet and scooped Giselle into her arms. "But you're going to be just fine, aren't you, pretty girl?"

Perry waddled into the room, and Ferb moved to scoop him up, holding Perry so he could see the baby. "I don't think you two have been introduced yet. Perry, this is Giselle."

"Ew." Candace took a step backwards as Perry chattered in response. "Watch those platy-cooties. She's just a baby, for crying out loud."

Ferb would never understand why Candace was never entirely at ease with Perry, but he knew she loved the platypus. She simply wouldn't admit it.

"Hey, guys." Phineas came into the nursery with a notebook in his hand. "I just had the greatest idea!"

"Don't even think about it," Candace warned.

"It's not that big," Phineas assured her.

"If it's some crazy thing you're going to strap onto Giselle's head to read her thoughts, you can forget about it," Candace told him. "Mom would never stand for it, and neither will I."

"No, that's not it." Phineas paused and scribbled something on his notepad. "That's a good idea, though. Maybe when she's older."

"Forget it." Candace gently put Giselle back in her bed, as the baby had fallen asleep. She was never awake for very long, but Ferb knew that was normal at her age. "You are not using her for any of your experiments or projects or anything. Now what's your idea?"

Phineas grinned. "The ultimate baby entertainment system. I figured we would base it on the most popular infant toys currently on the market and go from there."

"That almost sounds like a good idea...almost." Candace crossed her arms. "Fine, but keep it small and simple." With that, she walked out.

Ferb laughed quietly to himself. "When is she going to realize that we never do small or simple?"

Phineas shrugged. "She'll get it someday. So, what do you think?"

Ferb nodded. "Let's do this."

Thank you all so much for your feedback thus far on this story, and your patience with the egregiously long wait between the last chapter and this one. I got sucked in with other writing projects AND moved from Georgia to Illinois, so it's been pretty crazy here. I'll make it up to you by taking requests for the final chapter (or two, depending on how many requests I get). Anything goes – this is Phineas and Ferb we're talking about! The sky's the limit.