If you guys don’t have a copy of Hellenic Polytheism Household Worship by LABRYS, I recommend it. It’s a great beginner’s book that pretty much covers what you need to know in order to have an authentic, but modern, household practice. It also has a list of offerings for each deity (obviously not ALL deities, but the big 12 + a few others). My favorite thing about it though, and the reason why mine is wine-stained and over-used, is that it has beautifully written and translated hymns and prayers, some of which I can not find a more beautiful translation for elsewhere.