Here's a speculative poetry writing exercise.
Think about how an early 21st century writer can take in, sift through, and refract a 16th century form like a Petrarchan sonnet (as written by someone like Thomas Wyatt). Bernadette Mayer or Jennifer Moxley might be a good example of this. Now imagine yourself as a 26th century poet who has however incomplete it may have become. And, yes, imagine a society that is beyond post-industrial capitalism. It doesn't have to be utopic or distopic; rather, in a fabric where the processing of material conditions takes into account capitalism's (as we know it) ultimate ephemerality.
Then write a poem from the 26th century that takes in, sifts through, and refracts our 21st century traditions (or countertraditions).