Before the actual tree enters the home, I love to buy tiny greenery. No decoration needed, just place in white or gray pots, perhaps with a few pinecones to cover the soil. It's just enough of an aperitif as we approach advent season. A prelude.
If they are superfluous when the tree has arrived their snippets spruce up gifts, the christmas buffet, or they can be placed in the children's room. (It's great fun for the kids to craft decorations for their own tiny tree.)