This enchanted note is not standard paper but instead a magical apparition. The writing on the note disappears once the recipient has carried out or understood what has been written. This means that it's very environmentally friendly- but also means that if there's something someone wants to write down and keep, they should use something other than an enchanted note. When it comes to reviewing/studying for tests, students are instructed to not use a magic note due to the disappearing enchantment cast upon it.
The magic note takes a form that closely resembles a butterfly or bird whilst travelling from the sender to addressed recipient, and is described to fly through the air, often travelling through open windows to reach the person and opens up either in their palm or in front of them.