These beautiful handcrafted plaster car air diffuser cute birds are great Mother's day gift for your Mom, wife, your friends, family coworkers, and a new driver gift. You can choose one 2ML fragrance oil in my listing or choose unscented and use your own. (If you choose without oil you will receive only the bird, vent clip, without fragrance oil) Just add couple drops of the fragrance oil on the back, wait for it to soak in and enjoy the aroma in the car. when the scent is getting mild you can add more drops on the back and let it dry before touching it. after your refill is finish you can use your own favorite fragrance oil or essential oil Also can be used as Air freshener for small area, like small room or closet. They come with clip for the vent and strong magnet attached to the back of the bird which you can mount it vertical or horizontal to the car vent. please choose your favorite fragrance oil. we have 4 different design to choose from if you want a specific bird please message me first with the picture, i would love to work with you to create your favorite bird air freshener. They are ready to gift in nice gift box with ribbon. (Ribbon color is random). *PLEASE NOTE* These are not a toy, and they may break if dropped. Each bird is handmade in small batch for each order, they may have slightly imperfection like small bubbles and vary in color. it's Beauty of handmade product, that each is unique and one of the kinds.