DNA will someday identify all my sewing efforts! Lick the thread to tie a knot for hand sewing, lick the thread to thread the hand and machine needle, lick my finger to grasp tiny corners to match for sewing, etc. Then I also run a needle or pin that is a little stubborn across my scalp...the little bit of oil helps the point pass through much easier. I do wash the projects before gifting, only seems fitting!