Howdy!
I have a bag of 50 of these. They've always been called pegs or pins around here, craft pegs, clothes pegs/pins. Local hardware stores and home-repair DIY centers sell them and the clothes line/rope to go with them for the construction of a solar clothes dryer. I love to hang big pieces of fabric outside to dry, love to look out in the yard and see the big swathes of color blowing in the breeze. The pegs last longer than the spring pens but tend to leave marks on the fabric. Back to the dolly pegs: I have a set of "Nativity" figures from several years ago that the kids & I made, including all the Stars (Mary, Joseph, Baby Jesus, Wise Men 3, Innkeeper & His Wife, Shepherds) as well as a supporting cast of angels, more shepherds, the neighbors, various animals with & without horns and hides, that make a regular appearance near some tree every Christmas. Pegs & pipe cleaners rule! ;-P
Ragmop/Sandy