Most of these one-shots can be considered interconnected to each other and within the canon of the show. The ones that aren't will have [AU] in the chapter titles. Enjoy!
Timeline: Mid-Season 2
"My package is here!" Beast Boy announced to the whole tower.
"What is it, a new video game?" asked Cyborg. "'Cause if it is, I'll smoke you at it." He sported a confident grin.
"Hey, I'm not all fun and games," Beast Boy protested.
"Could've fooled me," said Raven in her trademark snarky way.
"Anyway," said Beast Boy, "I've thought a lot about the future Star went. I gotta make sure I don't end up like that circus freak."
Upon hearing her name, Starfire flew over and landed in front of him.
"Beast Boy, you should not worry," she said. "If the Titans do not disband, then surely you will remain active and not overweight."
"Nah, I'm not worried about gettin' fat. It's the baldness I don't want." Beast Boy opened the package and proudly showed her the contents.
"What is this 'Rogaine?'"
"It's hair loss treatment," said Cyborg. "But you're supposed to use that stuff once you've already lost some hair, Grass Stain. Buying it now won't do you any good."
"I could start going bald tomorrow for all you know!" Beast Boy retorted. "I'm just trying to be prepared! BB should stand for Beast Boy, not Bald Boy!"
"Do not worry, friends, I have a solution!" Starfire proclaimed. "In the future, Nightwing had hair as long as mine. That is more than enough for both of you to share!"
"What?" Robin made one of those confused faces where his mask completely captured the look of his eyes underneath.
"It just seemed as if your older self was letting that hair go to waste," Starfire said. "Future Beast Boy even said it was unfair that you had so much hair and he had almost none."
Meanwhile, Beast Boy appeared to be giving Starfire's suggestion genuine thought. "Hmm… yeah, I could make an all black 'do work. I would look so anime!"
"Don't I get a say in this?" Robin protested.
"C'mon, don't you wanna help a friend?" Beast Boy asked. He then shifted into a little kitty and made "the face."
Robin's resolve didn't waver. "You can just buy a hairpiece, Beast Boy."
*Meow*
"Or you could just shave it all off," Cyborg noted. "Purposely goin' fully bald bypasses the receding hairline entirely."
*Meow*
Throughout this discussion, none of the other Titans noticed Raven flipping through one of her spellbooks. She knew a way to put an end to this debacle before it got any worse.
"Hold still, Beast Boy," she said.
"Huh?"
"Metrion Capillus Æternus!"
A black beam shot out of Raven's fingers and covered Beast Boy's hair for a few seconds before dissipating.
"What the heck was that, Raven!?" he exclaimed.
"One of the simplest Azarathian spells," said the sorceress. "It prevents hair loss. You're welcome."
There were a few seconds of silence before anyone spoke.
"Works well for me," said Robin.
"That is also a good solution," Starfire agreed.
Meanwhile, Beast Boy shrugged and threw the Rogaine in the trash. "That was a waste of forty bucks."
15 Years Later
"Why would you do that, Mama? Daddy could've had anime hair!" 6-year-old Penny Logan complained. She had grayish skin, green hair, and purple eyes.
"I think the green hair your father already has is even more anime than Uncle Dick's," said Raven. "And it's even more special now that you have it. Don't you think?" She leaned down and gave Penny a little kiss on the cheek.
"Aww, thanks Mama!"
A couple of the ideas I have for this are on the more serious side, but for the most part they'll be little sillies like this.
