Up for sale is a wonderful vintage Disney party set still on the original backing. These are titled party baskets and there is one with Mickey Mouse, one with Donald Duck and one with Minnie Mouse. They are a hard plastic material. The cardboard backing has some losses as you can see, but still there! Each basket is about 3 1/2" x 3". I believe these are probably from the 50s or 60s.
Vintage Walt Disney Mickey & Minnie Mouse Party Baskets