With this extension, you can copy the contents of the Anki browser window to the system clipboard, a function which Anki sorely lacks.
Put the Python script in the Anki addons folder (%appdata%/Anki2/addons) and restart Anki. In the Anki browser, select the cards you want to copy and click "Copy selected cards to clipboard" in the Edit menu. That's it!
Especially useful for copying lists of Kanji to the Kanji writing practice sheet generator