Plenty of free royalty free videos are available online for personal use these days.
That apart, you can create small video files from most of the digital cameras. Here is a free software to join all the video files into one movie.
CombiMovie is freeware which can combine two or more mpg or mpeg files into a single continuous mpg file.
It works very fast, almost as fast as copying the files itself! Suitable for digital camera or internet movies.