I have both plastic and metal (steel?) yarn needles. The tips are pointy enough to go through any stitches so far, but not to the point of being sharp. I bought the plastic ones at Michaels, lost them, bought the metal ones at Joanns and then found the plastic ones.
If you can get to a store like that you could look at them to see what they look like. They were in the knitting notions section.