Swap Option: Clothing and Accessories
How to organize: Set up a garment rack with hangers, or string up a clothesline, then prop up a full-length mirror. Make signs, and sort fashions by size, type, season, or even personality. (Carrie, Samantha, Charlotte, and Miranda, anyone?)
What to consider: You may want to invite people who are roughly in the same size range (though anyone can trade bags, jewelry, and scarves). Remind guests to wear tights or modest underwear the day of, which will make try-ons less awkward.