Check out these sites:
http://www.polishcenter.org/Christmas/TRADITIONS.htm
http://www.whychristmas.com/cultures/poland.shtml
Here is something that I did for some of my Polish and Italian friends involved cream / light beige felt, poly fiberfill, ribbon and if you want ... needle and thread. Using pinking scissors I cut out an approx. 4 " circle and folded it in half. Put in a little fiberfill and sewed it shut about 1/2 inch in. I added a piece of ribbon to one end and created a pierogi Christmas ornament. I did the same with 2 approx. 2 1/2 inch squares. Cut them out using pinking shears, added some fiber fill and sewed them shut...then added the ribbon. Friends got a kick out of their ethnic ornaments and had me show their grandchildren how to make them.