You're so cool you know about everything first, so use that insider knowledge for good. Rave about your favorite new app and share your go-to with the room. You can also make a super karmic suggestion that your host recycle all of those gorgeous floral centerpieces in the best way. Repeat Roses, an eco-friendly service, collects flower arrangements from parties and events in order to refurbish and redistribute them to places like hospitals and nursing homes.