"I'm not worried about the space yet, I'm just trying to think ahead. Planning is what I do." Senku observed with a hum. "Even through recycling whatever I come up with, eventually I'll run out of room. It's always been that way, but..."

The luggage isn't a bad idea, inherently. He looked as though he were considering it. "Something to bear in mind when I run out of space in my room."

He wasn't likely to be a weapons hoarder, like 47 though, he was more interested in minerals and resources, and with any luck, chemicals.