Basic Garlic Aioli: Substitute lemon juice for the lime juice and eliminate the chipotle.
Pesto Aioli: Substitute lemon juice for the lime juice and add a couple of teaspoons of pesto in place of the chipotle.
Truffle Aioli: Substitute lemon juice for the lime juice, eliminate the chipotle, and substitute 1-2 t. truffle oil with the sunflower oil. (Be careful. A little goes a long way here!)