The most common garland is probably tinsel garland:
http://i774.photobucket.com/albums/y...psd9ddb34c.jpg
http://i774.photobucket.com/albums/y...ps9265959e.jpg
We used to make paper chains at school and they seem to be rising in popularity:
http://i774.photobucket.com/albums/y...ps7cfd3745.jpg
Some people want to be more creative:
http://i774.photobucket.com/albums/y...pscb3bd356.jpg
I like beaded garland(these are two of my trees):
http://i774.photobucket.com/albums/y...Dec2009005.jpg
http://i774.photobucket.com/albums/y...Picture001.jpg
One year I did this:
http://i774.photobucket.com/albums/y...G_0263-1-1.jpg
And this is what I call tinsel:
http://i774.photobucket.com/albums/y...ps3ebe62a3.jpg