I've been trying to figure out something that works for some time. I have recently tried 3 cheap protocols using commonly available lab reagents. I was using buccal samples (0.2 ml of spit).
1) Boil the sample in Tris EDTA Buffer
2) NaOH Extraction
3) Direct N Lyse
I compared them to a genomic DNA extraction kit (FAST DNA Prep - MP Biomedicals).
I have heard lots of people use NaOH extraction to get DNA from tissue and cell preps, but none of the first three worked for me after 2-3 tries. One of the people in my lab said that I could replace the bead beater with vortexing with glass beads.
I tried vortexing with beads with all four methods, including the kit and only the kit worked. I got a PCR result from control primers.
When you look at the costs of getting all the ingredients for the buffers kits are not so expensive - $1-$2 per sample.
A lot of these kits can handle solid animal tissues, though the one I have doesn't specifically cite hair. I would try it out.
I guess the point of my post was that there are lots of simple sounding published methods, but they don't always produce results without a bunch of debugging. I know alkaline lysis has worked for several people I know and is the basis of the kits. Its pretty simple.
That's my experience anyway.