access: JR ・東急蒲田駅 南口 south exit from JR Kamata Station
yuzawaya is a national chain of craft stores. the main store, in kamata, tokyo, is the largest, with 8 multistory buildings (!) of craft supplies. kamata is a little far away from central tokyo, but it's worth the trip. and yuzawaya is very close to the train station.
yuzawaya kamata branch website (in japanese).
this is a picture showing all the yuzawaya buildings.
View kamata, tokyo in a larger map