While I haven't used them for FMQ, I have used printed tissue papers for quilting cables, etc. in borders. I have seen some papers where they could be used for FMQ. Not sure if this helps or not.

Tartan, I love this idea. I like simple ideas that work. I will try this very soon! Thanks for sharing the idea.

My favorite is the purple disappearing marker, I mark as I go - and mainly use it for register marking or spine of feathers, rather than the whole design.

Thank you so much to all those who replied to my question. Such wonderful suggestions and tips and I am ready to try some and see what I think my work for me. It is wonderful to be able to ask and share and receive help from all over the world. Thank you.

I use frixion pens. I know alot of people don't like them, but I do and I have not had any problems w/ them.

On dark fabric I use the last bit of a soap bar. It becomes very thin. I use this on dark fabric. On light fabric I use a General pencil - you can buy them online.

I think people have different experiences and it just serves as a reminder to always test whatever pen/marking medium you use.

I use Frixion pen and i LOVE IT!!!! I am not in an area that my quilts are in freezing, below 30 degree temps, so that is not a concern for me.

I had one quilt that I took 2 1/2 yrs to quilt and I did not have an issue when I took the iron to the quilt to have the markings disappear.

I always wash my quilts when I am finished w/ them and I have had areas that I can tell the markings have washed out. I have an old bottle of Dreft and that is what i wash my quilts in.

Quilters have always used tools not made for sewing when making quilts. Back in the day, pencils were used to mark quilts and pencils weren't designed to mark fabrics either, but we use what we have.

As you try different things, you will find what works for you. The one consistent statement that seems to come across is that blue and yellow tends to be bad and not come out.