For an easy and economical tree skirt, I purchased a round holiday tablecloth (vinyl front, flannel back). I cut a small hole in the center and cut a straight line from the hole to the outer edge. It works great, is easy to clean & my kids love the design.
My GOODNESS! Why haven't we thought of that before? Of course we can do something that simple! The tablecloths that are cheapest will work fine, if I have extra money, AND they will add more color, even filling in visually for any missing gift spots.
I finally got the tree up and my grandson enjoyed decorating it. Now it needs a "skirt", but I'll call it a "wrap" since he's ~sensitive~ and anti-girl this year. lol God bless you for the idea. : )