Does anyone have any suggestions for the easiest way to put hair on top of a fondant head, and NOT using an extruder?

Buttercream! :) Makes it not as sturdy, but is fast and looks great! Sometimes ill use a flat piece of fondant, scratch some lines into it and cover the main areas, and then form little snakes to add curls and bangs and give it motion.

You can use modeling chocolate and use a veining tool to draw lines and make it look like hair.  

Yes buttercream is an excellent suggestion! With the same tip that you make grass with.

thank you so much for the ideas!

If you work quickly you can heat your fondant in the microwave (10 seconds at a time) until it's really soft but not liquid...and then pop it in a piping bag with the grass tip and extrude it the same way as buttercream...it will refirm up just like fondant once it cools again!  I do this when I have a TON of hair to make or a TON of graduation cap cookies with tassles.  You can also do it with royal icing, but that needs to sit undistrubed for DAYS if you don't want the hair to fall off/break.

I have used a garlic press with fondant for hair and it works well.  It does have the look of using an extruder so you may be asking for a different look...in which case I would use royal icing. If you add a small amount of corn syrup to your icing it adds a little more elasticity to it, making it easier to pipe with small tips.