OK. Experiment is a success !!

I put a tissue paper ( Kleenex or generic type) on a hard flat surface. Put the flint striker on the tissue paper and squeeze as hard as you can.

Two or three attempts produced sparks but no ignition. Then one more and sparks ignited the paper + some secondary sparks all around the paper ( in 1.5 inch radius ) . As it seems the previous attempts have scattered tiny pieces of the striker all ove the tissue paper and they have acted like magnesium shavings

Toilet paper, tissue paper, it is always around.
And, at last, I won't be tossing these flint strikers away !!