If you like beautiful stationery and letterpress items you won't want to miss popping into Winged Wheel in Omotesando. They have so many beautiful letterpress items for every occasion and my favourite product is their beautiful lined envelopes.
If you're in New York you can also catch them at the New York Gift Fair at booth #1770. Be sure to say hello to Rumi-chan, she is just lovely!
Winged Wheel also hosts invitation only industry workshops. At a recent workshop we made some vintage book files using brown envelopes and collage materials. You could try making one yourself from a vintage hardcover book and your favourite envelopes. They are perfect for filing receipts!