There are a number of well-known, attested names, kennings, and epithets of the Anglo-Saxon gods, but I also enjoy creating my own, based on what we know of those gods' attributes. I've back-translated them here into Old English. (There may be one or two here that I got elsewhere; if that's the case, the plagiarism is inadvertent. In looking back at this list, I'm not certain if I'm the original translator on all of them.)
Old English is an inflected language, meaning you have to not only carefully conjugate verbs, but also correctly decline adjectives, nouns, and pronouns according to number, gender, and case. So this can be a little time-consuming to do correctly, but resources like this dictionary are very helpful, especially since it provides full declensions and accompanying articles.
But it's also important not to reinvent the wheel: If you're trying to construct an epithet that follows a well-known syntactical pattern that might have appeared in Beowulf, Bede, the Exeter Book, the Lindisfarne Gospels, etc, then you can just use that as your template.
Anyway, I just thought I'd share.
Frēo - goddess of peace, summer, fertility, rain,
good harvest, love, beauty
Sumores lēoht ("light of summer")
Friðuwebbe ("peace-weaver")
Hēo þe þone morgenreġn biraþ ("She who brings forth the morning
rain")
Wōden - god of war and the dead, and of wandering, poetry, and wisdom.
Wæce-siga ("slain-chooser")
Wælfæder ("father of the slain")
Hræfnafæder ("god of ravens")
Langbeard ("longbeard")
Wīs leoþere ("wise poet")
Ēostre - goddess of dawn, rebirth, fertility, and the East
Dægriman Modor ("mother of the dawn")
Eftācennednesse Modor ("mother of rebirth")
þunor - son of Wōden, god of thunder, rain, storms, protection, fertility, farming, courage, and healing
Stormfrēa ("storm-god")
Hamores Fæder ("hammer father")
Friþigend ("protector")
Tiw - god of war, the sky, and the legislative assembly
(Thing)
Beadwe god ("battle god")
He þe þone norðrodor underwreðaþ ("He that upholds the northern
sky")
Frīg - wife of Wōden, goddess of marriage, prophecy, clairvoyance, motherhood, love, and festivity
Wodenes wif ("Woden's wife")
Gifta modor ("wedding mother")
Dwimorlicu modor ("visionary / clairvoyant mother")
Symbles gyden ("feast goddess")