Mei has a lot of ideas! Though some are... Concerning!

"Hmm, so you want to make sure no one can lay hands on this without permission, right?" Mei asked, turning the Lamp over in her hands, sitting on the bed, and currently only wearing her tank top and a pair of black panties, having made herself comfortable.

"Yeah," Izuku nodded, certainly not complaining about her current choice of attire. "Think you can booby trap the living daylights out of it?" He explained the defenses he already had, and Mei nodded.

"Hmm, think it can be shrunk down a little?" Mei asked him.

"...maybe if I had a sexual enough reason," Izuku replied, thinking.

"Hmm, how about if you just said you wanted to carry it around in a container of sorts, so you could call upon your genie for sex more conveniently?" Ochaco suggested as Mei put the Lamp down.

"...that would work I think," Izuku nodded, before turning towards Momo. One wish later, the Lamp was now big enough to put on a keychain.

"It'll revert to normal size automatically if it gets a new owner, but that will do," Momo told Izuku. "Still couldn't lift it myself though, even with the size and weight reduced," she added casually.

"That's fine, you don't need to," Izuku said, handing the Lamp back to Mei.

"Good, now the container doesn't need to be so clunky... Now the size is only dependent on what I pack into it... Speaking of which," she added, looking towards Izuku. "How lethal do you want it?"

"...lethal?" Izuku asked Mei, mirrored by Ochaco, Tsuyu and Itsuka, looking a little mortified.

"You know, how big do you want the boom to be if someone breaks the box open? The Lamp IS indestructible, right?" she then inquired.

"All but, but I'm pretty sure Master is going to veto anything that would cause... Excessive collateral damage," Momo nodded. "Not to mention the bodily harm if someone just tries to look out of curiosity..."

"Yes, please don't blow up my room," Izuku whimpered. Actually, considering what Mei could blow up by sheer accident, he was pretty sure Mei actually trying to blow something up might actually destroy the whole building!