Rubber Duck
The rubber duck represents one of humanity's most enduring manufacturing achievements. Specimens have been recovered from shipwrecks, discovered in sewage systems across continents, and emerged from decades of attic storage with their structural integrity entirely intact. The 1992 Pacific cargo spill released 28,000 rubber ducks into the ocean, where they continue to wash ashore thirty years later, their forms unchanged.
The material composition—typically polyvinyl chloride or food-grade rubber—resists degradation from water, soap, mild acids, and the determined gnawing of teething toddlers. Their simplicity is their armour.
Thanos
The Titan's durability is considerable by biological standards. His Eternal-Deviant hybrid physiology grants him resistance to most conventional weaponry, extreme temperatures, and the vacuum of space. However, this resilience comes with notable caveats.
Thanos has been defeated, wounded, and killed across multiple documented encounters. His form, while regenerative, remains fundamentally organic and therefore subject to entropy. The stones he covets have proven more durable than their wielder—a telling observation about the relationship between power and permanence.