I've got one of those in a surprise bag. Never used it cause I didn't know what it was for! Guess what I'll be trying?

i've seen these, but never "seen" these, if you know what I mean.
Now you have my attention ;) :!:

Hera Markers are great. I've used one for regular sewing/tailoring for a long time. With the influx of new pens and disappearing inks on the market they kind of fell out of popularity. I like the fact that I never had to worry if something would wash out, or show up, etc. I get really good results using my cutting mat underneath.

I use one and swear by it, the lines stay in and no worries about marks washing out etc. They are not all that expensive. Once you have bought one you do not have any other expences for marking your quilt ever again. I find it works best if you just mark up a small amount at a time, say the area you are working on at that sitting. I would not do without mine, so simple and cheap and works like a dream!

Gal

Besides the Hera Marker for straight lines I also use a big darning needle for needle marking most of my patterns like feathers, roses etc. The needle tip leaves a fine crease and it lasts quite a long time. Especially on light colored solids it's the best marking method I have ever used and I do most of my wholecloths that way.

Not only the Welsh Quilters used the method of "needle marking" with different tools - also the North Country Quilters from UK did it.