What are five totally distinct, creative ways to describe the usefulness of extra fingers?

1. One extra finger can be used to help hold up a conversation.
2. An extra finger can be used to create a more efficient way to spell out words.
3. One extra finger can be used to play a musical instrument.
4. One extra finger can be used to help open a bottle of wine.
5. An extra finger can be used to play a game of pool.