Open Paint, then open a small image.
Select the zoom "Magnifier" tool.
Windows Paint lists out the zoom options from 1x to 8x, but there is a 10x...
After selecting the Magnifier tool, point the mouse right at the border line right under "8x" and left-click. There you go.. the hidden 10x.
Create a trail image
Open Paint, then open an image.
Right-click on the image and select "Select All"
Now hold the "Shift" key and move the image around. The image will be drawn with trail.