You've messed around with stuff in the room some, but you'd feel better tackling the huge tentacle monster and SaDOS if you had some serious gear at your disposal. You take a quick comprehensive inventory of everything in the room to see what you're working with.
In the various supply bins are RAYGUNS, ROBOTS, bottles of INVISIBILITY SERUM, BAD WINDOW UNITS, LAPTOPS, MOUSE CAGES, TRUE COFFEINATORS, LAB COATS, and CHEMISTRY SETS.
Elsewhere in the ASSEMBLY room are ASSEMBLY CLAWS, MOUSE-O-MATICS, a MULTI-USE BEAM STATION, a ONE-WAY MIRROR, CUTOUT LAB COMPONENTS (which appear to form cabinets, shelves, etc), a CUTTING LASER that goes with it, WALLS, STAIRS, HYDRAULIC LIFTS, RUBBLE, several DEAD MICE, CUPCAKES, a COLLAPSIBLE SUPER TELESCOPE, one unexploded TRUE CATERER, and a SAFETY POSTER. You can't forget about safety.
Oh, and then of course the stuff on your persons, like your clothes, HAT, and your mouse friend Gadget. You've also got some stuff in your pockets like Hakeem's COMPACT MIRROR and Des's PROTECTIVE GOGGLES, JAWBREAKER-FLAVORED CANDY CORN, and CANDY CORN FLAVORED JAWBREAKERS. You kind of forgot about some of this junk!