Hi! I am Masayo teaching Japanese calligraphy in Oslo!
One of my students taking my lessons often in Mexico is going to purchase a calligraphy sheet which is written by water and she is so motivated!!
I was worried about the price though, it was just around 7 euro including brush and delivery.
But it takes about 2 months...
I recommend it to a person who wants to train calligraphy though, its difficult to buy materials!
It dosent need any paper and ink but only water and it disappears when it gets dry.