I'm pretty new to Magic and I started reading up on alters. I have an incredibly small house so I was planning to have them in my closet (my closet is pretty big). So far I'm interested in Loki and Aphrodite. When I was reading up on Loki I saw that you can't have his alter next to certain alters and would Loki and Aphrodite be ok next to each other? Another concern I have is with the offerings. I have no problem doing them but what happens to the offering? (I must sound stupid rn). If anyone is interested in being my teacher or mentor message me because I could really use the help!
I don't think there's a problem with Loki being next to Aphrodite on the same altar.
As for the offerings you make, the gods or goddesses obviously don't take them and make them vanish, so you obviously have to clean it up before making new offerings :P
From someone who has worked with the Greek deities most of her life, the Greeks think overly highly of Themselves. Like They are number one. Mixing pantheons is a touchy subject, but it isn't like it can't be done. My Greek altars are on one side of the room, while one other altar dedicated to another Goddess from another pantheon, is on the other side of my room. So I would say space them out, especially if you haven't worked or have had previous experience with household worship. Work with Them separately, because energies could clash if you called Them together during the same spell, ritual, prayer, ect.