Agnes Scott sent key chains, the school’s perfume, and things like that. Also, the acceptance came in a packaged gift box with tissue paper and a scottie jewelry charm. It was really nicely done.
Mount Allison mailed a virtual reality headset so you could “walk” around campus. We all loved that one.
Ohio Wesleyan had a food-themed brochure that actually prompted my D to look at the website and realize she qualified for lots of automatic $$, so she applied & was accepted there. That marketing worked, although she didn’t attend.
It may be worth noting that neither of the schools my kids ended up at had particularly distinctive marketing.