Here is my devotional space and home altar. This altar is in my library and study - the Green Room:
The cup of Water (well) and seashells; a burning red candle and wand for Fire; burning incense, a knife, and a feather for Air; stones, tree images, carved wood and dirt for Earth. A statue of a wizard and a Taoist for the Ancestors. The offering to the Goddesses today is a glass of tequila. Three cheers for Minerva (Pallas Athena), Mother Earth, and Mercury (Hermes).
I sit in the red chair when chanting, meditating, and making offerings. Mostly, I favor a Roman Hearth, and use Latin for rituals. Ita Est!