Containers that are often red

GASCANS

These portable metal or plastic vessels are commonly used to store and transport flammable liquids for vehicles or equipment. You might spot them at a gas station or in a garage.

This clue plays on the common image of red gas cans, which are portable containers for storing fuel. The word "containers" hints at the "can" part of the answer, while "often red" points to their typical color. "Gas" is straightforward—it’s what they hold—so combining the two gives you "GASCANS." No tricks here, just a direct description of a familiar item.