Wow, I always felt like I worked with a lot of deities, but some of you all must be real busy!
Guess I'll add my list to the bunch...
Deities I worship/work with on a very frequent basis:
Artemis - Greek, goddess of the hunt, the wilderness, and wild animals, among quite a few other things.
Hestia - Greek, goddess of the hearth fire and the home.
Hekate - Greek, goddess of witchcraft, the crossroads/liminial spaces, the moon, and the wandering dead.
Demeter - Greek, mother goddess of wheat, barley, agriculture and the harvest in general, bringer of the seasons.
Isis - Egyptian/Roman, sun and moon goddess, goddess of magic, motherhood, much more...
Deities who I honor on a less frequent basis (some monthly, some yearly):
Persephone - Greek, daughter of Demeter, Queen of the Underworld
Selene - Greek titan of the moon.
Apollon - Greek God of the sun, healing, prophecy, music.
Zeus - Greek god of the sky, order.
Aphrodite - Greek goddess of love.
Hermaproditus - Greek, child of Aphrodite and Hermes.
Fortuna- Roman goddess of fortune, chance, luck.
Pomona - Roman goddess/nymph of orchards and abundance.
Vertumnus - Roman, husband of Pomona, god of seasons, change, vegetation, orchards.
Heḱwona - Proto-Indo-European reconstructed goddess of horses, mead, sovereignty.
Kolyos - PIE reconstructed goddess of death.
Xáusōs - PIE reconstructed goddess of the dawn.
And not deities, but the spirits (household, ancestral, nature, or others) are also a very large part of my practice.
I do generally prefer a one-on-one experience with my deities, just as a personal preference, but since there are not a lot of different pantheons going on in my practice there's also no trouble with honoring a few deities at same festival, as it would be traditional to do so anyway.
I sing of you, blessed, night-winged Dream, Messenger of things to come, greatest prophet to mortals, in the quiet of sweet sleep you come silently and speak to the soul.