@Julia M. Usher posted:
It sounds like @Econlady's (Kate's) suggestion of doing PYO cookies may be your best bet then - have them color in a stenciled design with either edible marker or food colorings. Though I know others ship icing with some degree of success. Perhaps your icing recipe is less stable than others?
I don’t even use a stencil, the cookie is blank. I use Lila loa minis and give the parents pictures of what Lila shows. They can imitate or make their own.