See if you find anything you like Here!
I just bought several yards of holiday fabric and bunched it up under the tree. Loved how full it looked.
I use white pillow stuffing to make it look like a snowy angel hair without the glass.
A table cloth cut out in the center works well. You could embellish the edges with lace if you prefer.
Another option is a pretty flat sheet.
Here's one you may enjoy, Sharon: