Beneath the ocean’s surface, bacteria have evolved specialized enzymes that can digest PET plastic, the material used in bottles and clothes. Researchers at KAUST discovered that a unique molecular signature distinguishes enzymes capable of efficiently breaking down plastic. Found in nearly 80% of ocean samples, these PETase variants show nature’s growing adaptation to human pollution.
We don’t use that anymore, but all of these things have been used in this applications, plastic has more advantages than not rotting in some cases.
Wooden airplanes were still used successfully in the 2nd world war and in general aviation they still exist.
https://en.wikipedia.org/wiki/Robin_DR400 - here is a widely used example.