Enrichment is just as important for arthropods as it is for vertebrate species of pets. Humans seem to have this attitude that if the animal doesn’t display an emotional response we recognise it means we don’t need to put in any effort to better provide them with care.
However, “enrichment” for arthropods is usually fairly simple; a substrate for burrowing species, places to hide, things to climb on top of, and enough space to move around. New scents and the occasional swap-out or rearrangement of decor are bonuses.