You should bring your personal things such as clothes and items for personal hygiene. Bed linens, pillow casings and bedsheets can be rented (€10 / week) but if you wish to save on that expense, bring your own. Duvets and pillows will be provided but it is strictly required that bed linen is used!
In order to utilize the beach and swim stadium of Aabenraa, you should bring swimwear. As sport is an integral part of the course, sports clothes and indoor shoes should be brought.
Other than that you just need to bring your head, curiosity and engage in the debate!