Penguin, princess, clown, elephant and Pinocchio costumes.
As a rule, we seize any opportunity for creative activities. A good one is preparing Purim (Halloween etc.) costumes. It's also a good way to show your kids that you care, and has a great educational value, in my opinion. Even if they can't really participate in making a costume, children are involved in choosing a character, designing the costume and then see you gluing, cutting and sewing. There are also simple things they can help you with.
For this Pinocchio costume we just made the mask, everything else was found in the closet.