project in progress & guess!

Suddenly I realized I seldomly show things that are not done so here's one:
Step 1: Getting the fiber
Step 2: Washing the fiber
Step 3: Carding


Step 4: Spinning
Step 5: Making a yarn ball


Step 5: Knitting


I am curious to know whether you can guess two things:
a. What fiber is it?
b. What am I knitting of it?