21. "Hello, you've reached [your name, the office of X company]. The team is currently out of the office, but we'll be back on [date] stuffed with good food and eager to speak with you. Leave your name, number, and — if you're so inclined — your favorite [holiday dish, Thanksgiving tradition, etc.]"
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A word of warning: These greetings will not do you any favors if you're in the midst of a job hunt or work in a conservative industry. Always remember your target personas. If there's a chance they won't appreciate your sense of humor, opt for a straightforward greeting instead.
Microsoft continues to ride roughshod over people who have been users - at not inconsiderable expense - for YEARS. Skype itself is NOT free to use (even leaving aside my paid phone number) because it wastes hours and causes anxiety and frustration, each of which has a cost. Skype was never perfect but it had some degree of honesty before it was swallowed up by Microsoft.