NotSpaghetti
I have done some with my grandchildren.
We found that acrylic pens are easiest to use.
You can paint a background colour first if you want but the pens go on just like acrylic paint. Much easier for little ones.
Thank you NotSpaghetti for this information.
I've ordered some acrylic pens and my minded children are really looking forward to trying this activity, which is new to us but something I've wanted to try for a while.
One 6 year old found a perfect smooth stone in the path yesterday while we were out in the woods. We had to dig it out with my radar key 😁