I must admit. I have no good tips for holiday decorations. But I believe in them...I believe it helps get in the mood and extend the celebration time from a solitary day to a whole month...
My mom has a box of decorations in her basement for each holiday--most more than one box. She's collected them her whole life, and she only keeps things that are really special or cute. Like the skull candle holder from Mexico that we named "Ed" that freaks everybody out, or the nativity set with the little sheep we always put on the roof of the stable, all the way to the hundreds of special tree ornaments ranging from the olive wood nativity from Jerusalem, to the shrunken apple my brother carved in first grade that gets uglier every year. :) Decorations have these special memories attached, and the only way to do that is to collect them slowly and carefully, and store them carefully too.
Of course, decorations can also be a part of tradition. My husband's family always goes up to the family ranch to pick Christmas trees. Before I went myself, I was slightly disappointed with the wild trees... kind of gangly and lopsided... but once I was actually riding up in the back of dad's truck and marching through the snowy forest looking for the perfect tree, and smelling the air of the ranch and all the love associated with it... That tree became the most beautiful thing: a piece of family right in my living room all December long.
So, I'm sorry I don't have any pictures of cool and easy holiday crafts that will transform your house. If you have any ideas, I would really really love some--especially those kid-friendly ones. Or if you have special decorations--from gingerbread houses to homemade ornaments, let us all know. Time to share!