If you don't have the money for expensive Photoshop software, but have a scanner and want to make funny photos with yourself and others in it, simply go through your photos and pick out poses of yourself and others that you like. Then get backgrounds from magazines, catalogs, or newspapers and crop your photos. Add yourself to the scene as I have done in my own photo. I used several family photos and product catalogs to make up this and I made a mousepad out of this.
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Santa and holiday photos used to decorate! Take new and old photos of your kids when they sat on Santa's lap or just any photos really and add "scrapbook-like" backgrounds to them.