Actually it was addressed here awhile back.. The image that you render is your own - period. Just be sure to use items (if free) that are available for commercial use if you use it as a tube so the end user can use it commercially. I have offered tubes of Koshini, the tonnimal kitty and such.

3-D Arena | Instagram | Facebook

I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.
-Galileo