If you are looking for an "otter experience" or gift, consider these ethical and legal options:
Note that "Otter" is also a common brand name or technical term: buy an otter
Handmade crochet otters or original acrylic paintings. If you are looking for an "otter experience"
You can find a variety of otter-themed items including: these can be heated or cooled.
Brands like GiveHugz offer weighted otter plushies designed to help calm the central nervous system; these can be heated or cooled.