In addition to your usual travel and festival supplies (camping gear, plate, cutlery, bowl, cup), it is good to also bring a yoga mat, blanket and pillow for the concerts, yoga and meditative moments.
Although it is a summer festival, it is wise to bring some warm clothing as well, since it can cool down in the evening.
During the event, you will have the chance to explore unique handmade items from the stores and other merchandise. Or you can reserve your spot to enjoy a wonderful massage. For these reasons, it is helpful to have some cash with you, as digital payments may not be possible there.

