DIY Freeze Ahead Natural Room Scent Jars with Printable Tags from The Yummy Life here. These would make really good gifts that you could make assembly line style. You could also give them in a gift basket with the printable tag and recipe card.
Just fill a mason jar with some of YOUR favorite scents (we picked orange peels, cinnamon sticks, and rosemary), then add hot water and citronella essential oil. Float a small candle at the top and enjoy your bug-free night.