Inkstand by Kakimori

Asakusa's stationery great Kakimori is the force behind this ink-only specialist shop that allows you to create your very own colour: choose three basic colours from a range of 16 options, use the store's mixing kit to cook up your personal concoction, and then dip your quill in that colour to write one certifiably custom letter. If you'd rather choose a bottle of standard ink for your trusty pen, try Kakimori's main outlet instead.