Dynamic Arrows in PowerPoint

I thought of going beyond the conventional use of a laser pointer while making a PowerPoint presentation. I had a number of reasons for doing so.

1. Not everybody has a laser pointer.
2. Not everybody has a steady hand. If one's hand shakes, it is evident to those who pay attention to the slides, because the laser dot shakes erratically.
3. Not everybody can aim the laser point accurately.
4. The laser pointer needs cells, which cost quite a bundle.
5. Laser pointer can be harmful to the eyes, if the user is not careful where he points it.
6. It cannot be incorporated in a slide show that runs by itself, with narration so that one does not have to be present personally.

I have developed dynamic pointers and blinking pinpoint fluorescent lights, which can be placed at the point of interest in a slide. The arrows look something like this:

These are GIF animations, each of size 1 KB. One can place them by the structure to be pointed out, and say that the green arrow points to the uterine artery and the yellow arrow points to the ureter. Blinking lights work equally well. These images can be inserted by the standard method Insert >> Picture >> From File. They can be positioned wherever one wants them. One with some knowledge of computer graphics and animations can make them oneself. Those of my readers who want ready made pointers may send a request email to me. Appreciation by the viewers of the slides which contain them will be reward enough for me.