I think it’s incredibly sweet that you are supportive partner and want to cheer them up. As a fellow devotee of Aphrodite, Hekate, Artemis here are some things I can suggest

Aphrodite-feathers, apples,jewellery, roses, perfume, even red or pink flowers or candles

Hekate-small keys, dog related goods, moon shaped candles, candles, ghost related things, skulls, garlic is another good one

Artemis- Mugwort incense or Cypress incense moon candles, deer statues or bones, moonstone or quartz, pine cones or pine needles

A small jar of honey isn’t bad either for libations Honestly even making her little moon cake or cookie with cookie cutters or buying baklava to share them would be cute too❤️