I had a blast learning to spin deer hair last year. Eventually I got tired of using natural colors. So I looked around and found using a similar process that I use for dying chicken feathers works pretty well for deer hair as well. This fall I collected a handful of deer tails from other hunters as well as saved some white belly hair from deer my wife and I took. I used borax on them.
What you need:
Deer tail/hide to dye
Kool aid (unsweetened) color of your choice (20 cents for name brand, 12 cents for store brand)
vinegar (under $2 for half gallon)
I have been using quart sized mason jars because I can do more than one color at a time. Mix water, vinegar and the drink mix in the jar. The recipes I read called for 2 tbls per cup of water. Much to the chagrin of my wife, I feel recipes are just guidelines and just put what I thought was needed.
Put your deer tail in the jar and heat in a large pot with water. Use low heat. I usually go between 20 to 30 minutes.
Once the tail is the color you want (or the tail has used up all the color in the jar- a few times I have pulled the tail out leaving clear water). Rinse the tail and dry.
Sometimes the colors don't turn out like you expect... I was hoping for a darker purple on the one in this picture. The yellow, orange and red on the bottom were done with belly hair.
I think it goes without saying but be careful... those jars get hot when heated on the stove...
All said I have about a dollar in these tails (all of them not each). If you have feathers you want to dye do the same thing but put them in a microwave safe pan (I use pyrodex cake pan). Put it in for 2 minutes. Stir. Then another 2 minutes.
This is a few wild turkey and domestic chicken feathers I have done.
Hope this helps someone. I would love to hear how others do it also.