> examine light bulb
You examine the light bulb. Huh, it looks like it would fit snugly in the laser cannon.
> take light bulb
You've got: laser cannon, rotten fruit, light bulb, crowbar, batteries, butcher's knife, keychain, ID card, Pot of Gold, Beautiful Painting and pants.
> put light bulb in laser cannon
... Okay... You put the light bulb inside the laser cannon's barrel.