Multi layered container!

"Okay, so no lethal or even particularly harmful booby traps then," Mei pouted. "Dang, wanted to see how big of a boom I could make with a box that could fit in your bag!"

"Yeah, definitely not!" Izuku shivered at the thought of carrying around something with that kind of payload.

"Hmm... So prioritize something that's damn near impossible to open without knowing how, so as close to indestructible as I can possibly manage," Mei mused. "With a few basic booby traps on the side. How about a multilayered box?" she suggested.

"Multiple layers?" Izuku asked, raising an eyebrow.

"Yep, the outermost layer requiring a key, second layer being one that requires biometrics to open, a third requiring several security questions to be answered in a row, and the last one being a puzzle box? All made of a tungsten alloy, maybe reinforced with synthetic diamond?" she mused.

"That's kind of hard to get ahold of, ribbit," Tsuyu remarked.

"It would take a lot of lipids, but I can provide such materials without too much issue with my Quirk," Momo replied.

"Exactly~!" Mei beamed, going to Izuku's desk, grabbing some blank papers and drawing up blueprints. She didn't ask permission to use his stuff, but he didn't say anything. She was helping him out after all. Also, the way she bent over the desk really accentuated her panty clad ass. Like hell was he going to interrupt that. "I think I can manage all four layers into a size that wouldn't take up too much space in your bag. Might make the layers a bit thin, but still solid enough to make it unbreakable without a good amount of ****!"

"What if someone who is capable of applying that kind of **** gets a hold of it though?" Tooru asked.

Izuku shook his head. "Who would apply that kind of **** to get through that kind of security, even if they could? Something like this would have to contain something valuable, as most Villains would think. They wouldn't want to risk damaging whatever was inside."

"I thought the Lamp was indestructible though," Setsuna stated.

"Yeah, but a would be thief wouldn't know that," Itsuka reminded her.

"Exactly," Izuku nodded.

"Good! I wouldn't want my little baby to be crushed!" Mei giggled, before looking back at Izuku, and grinning. "So, how about we multitask?" she suggested, wiggling her ass.

"... multitask?" Izuku asked, though he had a pretty good idea what she had in mind.

"Well, Master... My hands are occupied, but my other end is free, if you catch my drift," she suggested, giving her ass another wiggle.