This tutorial shows how to create simple gif animations using Inkscape and Gimp, two very nice and free open source programs. Nothing big, but my first instructable, so don't be harsh;) Image below is the result of this tutorial, but you can make much more difficult animations when you master these programs. Example two is another animation i made in just a few minutes. It's very easy to do;)
1. Download both Inkscape and GIMP.
2. Open Inkscape, if you are not familliar with it, go through the tutorials, this will help you.
3. Draw the first frame of your animation(clock this time). I've drawn it using rectangles with rounded edges, a triangle and a circle, pendulum is made by placing an oval either over another one or a rectangle, selecting both of them and pressing ctrl+ + (Path/Union). By the way, the end of the pendulum is hidden under the lighter . Actually, to do this, you must duplicate the darker inner part of the place where the pendulum is, then select the duplicate and the lighter rectangle and press ctrl+ - (Path/Difference). Then arrange the pieces of the clock by sending them back/Forward to get something like the picture. Then draw a white rectangle without borders on top of the clock, and send it to back of the image. With this rectangle you will control the size of your gif and it's essential!