Luckily, most decorations associated with Christmas are Pagan in origin.
Evergreen boughs remind us that nothing ever truly dies, and can easily be spruced up (pun intended) with holly berries for the
Holly King. Wrap them around stairways, mantles, and windows. Don't forget a
wreath for the front door for the
Wheel of the Year. Ivy is another greenery that you can festoon your home with for fertility in the coming year. Speaking of fertility, don't forget your mistletoe!
Candles everywhere! You'll most likely be making and blessing new ones for Imbolc, anyway, so why not use up the old ones? It's dark and dreary, and what better way to celebrate the festival of light? However, do use common sense and only burn them in containers in safe places out of the reach of children, pets, and other gremlins. Traditionally the colours would be red, green, white, blue, silver, or gold, but you can use any you like. For extra light, put them in front of mirrors and/or windows.
Display your Yule log before burning it.
Hang bells everywhere, especially on doors, for good fortune.
Don't forget potpourri! Cinnamon and pine scents are long-lasting, inexpensive, and festive.