Carl's bomb-crafting station in the guild, which Justice Light uses heavily and is about to lose access to.
Among Carl's objections to sealing The Bait Shop is that Justice Light will lose access to his sapper's table and the Bomber's Studio. The eagle waves it off: "It's safer and faster to use your table, but there's nothing left I can't do on my own." Carl presses—he's at the table a lot—but Justice Light insists he already has everything he needs, then reassures the room that he has contingencies heaped upon contingencies.
A crafting station in the guild's workshop rooms.
Bomb-crafting facility whose loss the crawlers accept to close the saferoom.
Also appears in books you've already read — spoiler-safe to their endings: