3 – (Three years old) His Greatest Creation, Part I

The music was loud and Tony was in his little world. Playing with his toys, building new cool stuff to add to his suit and simply being a genius! He was shaking his head to the music sound, mouthing the words, when it all got quiet. He frowned. "JARVIS?"

"Miss Sarah is up, sir, and she's at the workshop's door," JARVIS replied.

Tony turned his head and sure enough, his three year old daughter was standing in front of the glass door, rubbing the sleep from her eyes, clutching the white bear's claw. He smiled at the adorable picture she made. Her curly brown hair was everywhere and her pink polka dot pajamas were one number too big on her. "Open the door, JARVIS," he said.

For safety reasons, his children didn't have a free pass to the workshop. They were only there when an adult was in the room.

"Daddy, can't sleep," Sarah complained with a sigh walking towards her father.

Tony set the screwdriver on the table and got up. He picked Sarah gently, and placed her at his hip. "Bad dreams, little bear?" he asked softly.

Sarah nodded, her curls bouncing up and down. "Can I stay here, Daddy? I didn't want to wake Mommy. She's tired," she explained.

"Of course you can," Tony grinned kissing her cheek. Sarah wrapped her arms around Tony's neck and squeezed softly.

"Thank you, Daddy," she smiled at him and Tony would swear that every time, it melted his heart. "Can we watch Dexter's Lab?"

"You know, you need to sleep, little bear," Tony chuckled.

"I'll fall asleep quicker if I'm watching cartoons," Sarah shrugged with a sheepish grin.

"Your Mom is going to kill me, but yes, we can watch Dexter's Lab," Tony agreed and Sarah's grin reached her ears. "JARVIS, save all of my projects and shut everything down, I'm not working anymore tonight."

"Right away, sir," JARVIS replied.

Settling himself on the couch, with Sarah nestled in his lap, holding Baby Bear (that's what she called the plush white teddy bear Steve had gotten her for her second birthday), he picked the blanket he kept there, and covered them both. "JARVIS, please download all of the episodes of Dexter's Lab that Sarah missed," Tony asked kissing the top of Sarah's hair.

"Very well, sir," JARVIS said and the screen showed up.

"Your light is pretty Daddy," Sarah said.

Tony looked down and saw Sarah's little fingers touching the arc reactor.

"That's why blue is my favorite color, because it reminds me of your heart," she explained.

Yes, he was Tony Stark and his eyes were starting to tear up. He was sure if he had the Cap's sensitivity, he would be bailing his eyes out. Thankfully, he didn't.

"Is that so? You never told me that," he poked her nose.

"You never asked," she giggled and blushed, resting her head in his chest, near the arc reactor.

The cartoon started and he felt Sarah sigh with happiness, she snuggled into him more, and he wrapped his arms around her. He loved her so much. His little princess, his joy, the typical daddy's little girl and one of his most prized possessions'! Tony sometimes would wonder if a heart could burst with love, because between Sarah, Sebastian and Pepper, he had so much love! They were everything to him. Sarah was one of his greatest creations, and Tony would be sure that she always knew that.

After an hour or so of Dexter's Lab episodes, Sarah was finally asleep. Gently and careful not to wake her up, he picked her up.

"JARVIS, shut down the workshop for the night," he requested in a soft whisper.

"Good night, sir," the AI replied in a more quiet tone.

He climbed the stairs for her bedroom, and he was tucking her in, when her brown eyes flashed open. "Daddy, don't go, I don't like the dark," she pleaded grabbing his hand.

"You're afraid of the dark?" Tony asked tilting his head to the side.

Shyly, Sarah nodded.

"But we're in the dark right now," he pointed out.

Sarah poked his arc reactor. "No we're not," she mumbled.

"Daddy's not a nightlight, little bear," he teased.

"Stay, Daddy," she pouted tugging at his sleeve.

"Alright," he smiled, slipping under the covers of her bed – thank God he had convinced Pepper to buy a big bed for their children. "Better?" he asked.

Sarah hugged his waist. "Much," she replied sleepily. "Night, Daddy!"

"Night, little bear," he kissed her head and closed his eyes.

He shifted and sighed, before opening his eyes. Tony groaned at the evil sunlight. He heard a small laugh and opened his eyes again. Pink, purple, butterflies and fireflies invaded his sight. He was in Sarah's bedroom. He did fall asleep with her.

"Morning, Tony," Pepper chuckled from the bottom of the bed.

Tony sat up and yawned. "What time is it?" he asked rubbing his eyes and Pepper couldn't help but notice that it was from Tony that Sarah inherited the gesture.

"Almost half past nine, I just left the kids in the kindergarten," she explained.

"Why didn't you wake me up? You know I like to drop the kids off too," he grumbled.

Pepper found it adorable that Tony wanted to do all the little things a regular father would do – like drop the kids off at school, kiss them goodbye and wish a good day. She loved him more and more because of those little things.

"Tony you haven't slept for two days, you were so peaceful and…well, you were sleeping like a rock. The kids could've blown up the house and you would still be sleeping," she teased.

"Correction, in an explosion, I would be dead," he grinned.

She rolled her eyes. "May I ask why did you choose to sleep with our daughter instead of me?"

Tony scooted closer to her. "Jealous, Mrs. Stark?"

"Curious, Mr. Stark," Pepper replied with a smile.

"I think you're jealous," he pointed out and pulled his wife for a deep kiss. "She's scared of the dark," he explained when they broke the kiss. "And she sees her Daddy like a form of a nightlight," Tony chuckled poking at his arc reactor.

"She told that she loves your 'blue heart'," Pepper smiled softly.

Tony then got thoughtful.

"What is that brilliant mind of yours thinking?" Pepper asked.

"I'm going to build an arc reactor nightlight for Sarah," he scrambled of the bed, getting tied up in the sheets and tumbling to the floor.

Pepper burst out laughing and Tony just huffed, untangling himself.

"Easy, Tony, let's get food in you first," Pepper shook her head. "Besides, we have a meeting to attend."

"But our daughter needs a nightlight, and I'm already picturing it and everything…" he whined.

"Tony," Pepper warned.

"It's for our daughter's sake, Pepper," It was a low blow using their children to skip meeting, but hey, it did the deed and he really wanted to build the nightlight for Sarah.

Pepper pursed her lips and blew out a breath. "Fine, I'm going alone," she agreed and he grinned.

"Have a nice day at the office, honey," Tony wished, kissing Pepper and then running out of the room.

Pepper snorted and shook her head. That man was out of this world, but she loved him anyway.

Any of you knows any good father-son activities that would suit Sebastian and Tony? I ran out of ideas, everything seems little when it comes to Tony Stark and his son.