He looks at many, and even implements one idea.

"...tentacles seem interesting, but a little ****..." he mused, looking at a few videos with that content.

"They're a pretty popular hardcore option. Bondage, and the ability to fuck a girl in all three holes, all without needing any kind of tool, sometimes having body modification or aphrodisiac compounds... And I could either spawn those, or call preexisting ones from other dimensions... Or even give you the ability to sprout them from your own body," Momo ticked off on her fingers.

"Let's put a pin in that one for now..." Izuku said, keeping an open mind, but not seeing himself employing that immediately. "...maybe I could do something similar but less **** by asking you to give me the ability to control ropes in sexual scenarios... And while we're on that subject of controlling objects, it might be fun to control the clothes of a girl in the harem for various things..."

"Oh, interesting," Momo purred.

"As for body modification... These catgirls, or Nekos, are pretty darn cute," he admitted, scrolling through other videos. "Kitsunes too... And these Hucows are pretty hot..."

"Oh, and they can lactate like crazy too, if you're into that," Momo nodded. "You could even influence the flavor of the milk with my magic..."

"Now that's a thought... Why limit to influencing just the flavor of milk though?" Izuku asked.

"Master?" Momo blinked.

"Could you change the flavor of my semen?" Izuku asked.

"Oh yeah, definitely, but it's always delicious to me, Master," Momo assured him.

"True, but why not make it taste even better? I wish for my semen to taste like a sweet nectar," Izuku nodded.

(A/N: For those of you familiar with it, I am shamelessly ripping this idea off from another story, lol. Cookie for anyone who knows which one.)

"Granted," Momo grinned snapping her fingers, making him moan as he felt his testicles tingle slightly as they altered a bit.

"Good, already this is pretty productive... Let's see... There's also futanari... Pin in that, might consider it, but if dicks on girls is just too off putting, strap-ons enchanted to have nerves simulated so the wearer feels erotic stimulation like it was part of their own body while wearing it could also work."

"Good thinking," Momo nodded.

"Then there's gender morphing... Maybe I'll try that on myself, just to see how sex as a female feels," he blushed at the thought.

"Not to mention the ability to play with your own boobs," Momo laughed, and Izuku blushed at that. "What? Most guys would do that first thing if they ended up as a girl."

"...not confirming nor denying that," Izuku decided, continuing to look at other possibilities, jotting down notes (not in his Hero Notebook, a separate one), ruling out and filing away many different ideas.

(A/N: Feel free to give some input in the comments what you do, or don't want to see in terms of Izuku exploiting Momo's abilities. I'm definitely doing at least one cat girl in the harem though.)