Canning jars are super useful. I use them as candle holders - you can tie decorations on them for extra fun. I use them to hold desserts such as grandma's chocolate pudding. I use them for drinks. The really small size jars are nice to make taste size desserts. You can also usually score free greens anywhere that Christmas trees are sold. If you ask they usually have a pile of leftovers that were cut from the bottoms of the trees.