Our daughter is studying for 4 months in Antigua. She will be celebrating her birthday next week and I wondered if there are any ideas for a special treat that I might buy her - a manicure or a cooking class or a bike excursion or ??? I thought I would like to buy 2 of whatever it is so she could bring a friend along - so would like to keep the price reasonable. Under $100 for both. Any recommendations would be appreciated.