EkiStamp

Another collect-em-all concept from the Japanese, this series of stamps can be found around Tokyo at various subway and railway stations. They are not new at all, but from time to time you'll see some seasonal specials.

The largest of the stamps fits within an A6 notebook so they are very easy for collectors, but if you're not OK with seeing stamps bleed through to the other side of the page, you may want to get notebooks with pages thicker than 80gsm.

You can also buy [[stampbooks]].

Subway Lines

References

1: YouGoJapan: Eki Stamp Book