I will do the advertising today:P If you're looking for some kawaii penpalling stuff, here's a nice shop in Facebook (click on the image).
There is kawaii stationery, decotapes, stapms and other things. The prices are in Mexican pesos but you can buy abroad if someone is interested:)
1 MXN ≈ 0.08 USD
1 MXN ≈ 0.06 EUR