We can store digital data in a small bottle.

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This is a USB memory.

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The cork includes the memory.

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It seems empty in a bottle, but there is a lot of wonderful memories in it.

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via

Is this a book? or a cup?

BookCup

Charcoal that actually melts.

CHARCOAL CANDLE

Communicate with Sticky-Notes.

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Small Bird Bookmark

Bird marker

You can tie with a string everywhere.

tokka band stamp