: For a more durable, single "piece," Amazon features metallic infinity cubes and transformable spinners that offer a more premium feel than plastic alternatives.
: If you want something discrete and "clicky," metal sliders like those found on Amazon provide satisfying tactile feedback with adjustable noise levels.
: Retailers like Target offer large bundles (often 30+ pieces) including pop-its, infinity cubes, and stretchy strings, which are great for classrooms or finding which texture you prefer.