We do the WH ornament too. Every year former APs send pics of it on their tree - it’s very cute. We also do small things like colorful gloves, socks, headbands, body lotions, gift cards, treats. When we have hosted males we have done quarter zips, treats, gloves, workout shirts. We have always done between 150-300 in cash and then about another 100 in gifts but if your ap hasn’t been with you that long or you don’t have a lot to spend, I’d say 100 cash is fine and then a few smallish gifts.