Many people ask SaKuRa where these things can be bought. In fact, SaKuRa herself doesn't know either, after all, they are forwarded. But here are some places you can check out. For example, some stationery wholesale markets, if you're in Beijing, places like Tianyi which is a large market. SaKuRa's friend used to run a small shop and often went to those places, seeing many creative items, maybe these things are there too. It's about discovering things yourself, so take a good look around the nearby stationery markets, hehe!