"small" Mavericks Updates

After my first day with Mavericks I have found some small things which are new and great.

1) Mavericks shows currently plugged in SD Cards, Hard-drives,... on the right upper edge (below spotlight)

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2) Autocorrect is now fully integrated into OSX. It tells you it corrected a word by underlining it with small blue points.

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and gives you proposals like this:

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3) for all the iMessage Users out there:

a) Emoji is now fully integrated

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b) you cannot only respond messages in the notification center, but also write new ones. I'm not sure wether they mentioned it in the keynote or not.

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What other "small" new features have you realized?