A pretty evergreen that we use as groundcover under hedges and around the base of trees where other plants are reluctant to grow. There are several varieties, typically with blue flowers but other colors are available. Vinca major is slightly taller but can be invasive, vinca minor creates a more dense mat of ground-cover. Both are pretty and great for suppressing weeds, and both have a very long flowering season.
I am using vinca minor under a lilac in my front perennial bed, and vinca major under my driveway shrub border. Love them both. V. major gets a bit aggressive, but where it is sited it can pretty much just colonize at will - beyond the shrub border is our front pasture, not currently being used by any animals, and the shrubs are almost all mature so they can hold their own against the vinca.
I want to live in a world where the chicken can cross the road without its motives being questioned.