Get a pair of Halloween-style socks or tights and a cardboard shoe shape (which I found in a pair of shoes I bought). Scrunched-up tin foil in the shape of toes also does the trick.
Push the shoe shape down into the toe of the sock/tight leg and feed the rest of it up the leg of the chair or table. If it slips down you can secure it with tape.
I tie a knot in the leg of my tights and it holds perfectly.
You can decorate tables, chairs, any legs you can find!