Would buy my female best friend a house and new car, would set a college fund for her daughter and give her the means to be able to maintain it all (send her to school, trust fund for taxes, etc) I'd also finally give her a honeymoon she never got, send her someplace awesome with her husband. To my best male friend I'd get him an awesome condo, new music equipment for his band and anything ese he needs for it (studio sessions, etc) new BMW same model as his old 89 BMW
Every other friend can fuck themselves, those are the close ones who are with me through thick and thin.