A quick, easy and cheap way to add to your holiday decor is to just get a picture frame that you already have and add a postcard or picture you found on the Internet and put it inside.
This is what I have up right now for my Fall picture. I got the frame in the clearance section at TJ Maxx. Then I searched for a Fall theme vintage postcard on the Internet and printed it out, popped it in the frame and now I have a cute little picture to add to my Fall decorations.
I love searching out cute pictures now for all the holidays. As long as you are not printing out a picture off the Internet to sell or claiming it's a real vintage postcard you will be fine. No laws are broken.
I know lots of us collect vintage postcards so there should be some great ones you too can frame.