Short and Sweet:
* Valiant Vikings
* Vivid Violet
* Vast Valley
* Verdant Vines
More Descriptive:
* Victorious Voyage
* Versatile Virtuoso
* Vigilant Vigilante
* Vibrant Velvet
Humorous:
* Vicious Vegetarian
* Vexing Vacation
* Vengeful Violinist
For a specific topic:
* Valuable Vitamins (health)
* Versatile Vehicles (transportation)
* Voluminous Volcanoes (geography)
* Victorious Volunteers (community)
Remember, you can use these as a starting point and get creative!