If they don’t already have one, then a wireless mouse or keyboard. You may need to avoid the brand names to get under that price.
A shelf (like one for the countertop or wall or to put on floor) to put stuff on. A soft animal (like a kramig from IKEA). A rice cooker (who doesn’t like coming home with food ready).





The full-size Blahaj is around $40 (there is a smaller version for around $15, but I didn’t see that until writing this comment), and Kramig is under $25 (around $5 from what I see).