I pulled out some temporary tattoo decals we keep around the house and just for fun added a couple with geometric patterns to the inside of a renaissance head. Very easy, just taped the decal in position inside the head and placed a folded paper towel soaked with hot water on top for a minute. It's important to rub the back of the sheet covering the decal gently from center to side to press out any small air bubbles that might get caught between the head and the decal. The image shows through the head fairly well;
Temporary tattoo decals are inexpensive and available in many sizes and designs, a combination pack of tribal or geometric decals provides some interesting patterns to work with. A number of smaller decals can also be assembled into a larger design. For example, in the picture above 2 decals were positioned on either side of the bridge.
They can be removed from a banjo head by soaking and vigorous rubbing with a sponge and warm water, if it leaves any tinted residue varnish remover can take care of it. Varnish remover gives off strong fumes and should only be used with good ventilation but it works great for removing any greasy stains and finger residue from an artificial (not skin) head. It will completely remove the logo from a head in under a minute.
So I'll leave these decals on for awhile and maybe change or remove them in a few months. They're on my basic Goodtime 'project banjo' which is a good platform for experimentation and a bit of artistic embellishment.
Now take it a step futher, I bought a fake tattoo sleeve. It`s made out of a nylon and when you put it on yer arm looks real. I tricked my mother and some friends. lol Not quite the same but fake tattoos are fun! Looks good.
Now THAT is one cool-looking banjo! It's one of those now-why-didn't-I-think-of-that ideas. As luck would have it, all my banjos are equipped with Renaissance heads. Hmmm, interesting...