If you are going for bike journey you definitely need to have your bike, then money, first aid kit your proper riding gear then cloths, sunglasses. My brother was planning to go for a bike journey with his friends that time my father asked him to view online for the stuffs he should carry. He checked it out and found that sunglasses are an important part because while riding eyes get contact with dust and sunlight due to which eyes might get infected. So he did take his sunglass with him.