One of those superhero fiction settings where everyone has a superpower but all superpowers are "magneto but for a different material." Power levels are classified based on how annoyingly specific it is, eg "magneto but for plants" vs "magneto but for hydrangeas".
The Anomalous Power Classification Board having heated debates about whether "magneto but for polystyrene" should be ranked higher than "magneto but for polyethylene"
I feel like this immediately runs into a situation where if you're magnetic for something highly specific and useful like Penicillium mold or Silk or, idk, fossil fuels, you instantly become incredibly rich or incredibly exploited and meanwhile everyone with more generalized powers are running around like "damn I can make a ball out of all this junk" like the prince from katamari
the person who is magnetic but for hyperspecific poison enzymes makes a killing selling edible death caps