The classic Mustache Template found at the Inspired Bride.
The above is a great free printable from EasyMakesMeHappy. She shows you how to make your paper 'staches into felt ones pictured below.
& check out the tutorial
Not only a great looking 'stache but an entire disguise kit from Design House Digital
Lips and Mustache's from Living Locurto (love her site)
Mustache with shading from Moshi Monsters
The Patterned 'stache from Catch my Party
and what would a mustache party be without a good old game of pin the 'stache on Burt Reynolds.