I found a way to make my own sashiko thimble, helps a lot for mending with sashiko stitches : r/Visiblemending

Leather Japanese Sashiko Thimble

Clover Sashiko Palm Thimble for sewing, quilting, needlepoint, and embroidery Model #611

How to use a sashiko thimble

Sashiko Ring Thimble, Finger thimble, One size fits all

Sashiko Leather Palm Thimble Sashiko thimble Needle Thimble Embroidery Thimble Made In Japan

Ever wonder how to use a Sashiko thimble? . here's how! It means holding the needle and fabric slightly differently. Working this way you can build up, By Zen Stitching

Little House Palm Thimble for Sashiko - A Threaded Needle

Wear on my ring thimble practising unshin : r/sashiko

Sashiko Leather Thimbles by Nifty Notions

Make Your Own Sashiko Palm Thimble