Stencils and spray temporary hair color
15 years ago I did what I called tattoos on hair where I would bleach the guys/girls hair
then 'hand paint' on the design.
On the hair which is the same concept. It took us a helluva lot longer....... I have a few stencils because I wanted to 'try' them on my daughters & am happy to make up a kit for you if you would like. Just send an email (firstname.lastname@example.org) to let us know they would be interested. The prices would be pretty reasonably prices and it would last to the next shampoo then completely shampoo out. Great for Holidays - Valentines day, St. Patricks, just every single holiday in the month to make others aware of the causes you support.