This is honestly probably the most simple pattern I have ever made, and I absolutely love it. It looks complicated (lord knows I had to unravel the thing at least ten times during the process) but it's fairly straight forward and totally worth it! You can literally make these for an army of hundreds in a matter of a few hours! (Not that that's what I'm doing . . .
*coughMisha'sMinionscough*) I mean, what?
For the chain, I just used a really fine yarn, the smallest hook I had (which was a 3.25mm, I think) and crocheted it until I could fit it over my ears and have it not fall off. I don't remember how many I ended up with, but I don't think that makes much difference, seeing as everyone's head is a different size anyways. And then I connected the ends to the back of the mustache, near the top.