Art can be so inconvenient sometimes. Thank goodness for the Art Convenience Store, launching September 21 at Colette. Based on the idea of a souvenir from Tokyo, the project celebrates the (mobile) art and culture of Japan through collaboration: Hiroshi Fujiwara x Frixion pens, Jun Takahashi of Undercover x Gimbis biscuits Chitose Abe of Sacai…