First we need the brand logo that would be hip, easy to  remember, scales at all sizes and easy to identify.  I might like to see one that incorporates the original Duncan butterfly yoyo,  maybe change the wording to say YoYo where Duncan is and nope where the butterfly text is and keep the butterfly logo or get rid of the butterfly and put something else, or nothing?   2nd we will have lots of  take offs of the yoyo nope name for Yoyo nope logo designed T-shirts. I like the style of the old-school wacky packes that Mad magazine did in the 80's. https://www.pinterest.com/jffrantz/mad-magazine-stickers/  I also like Marvel comics logo and super heroes,  but we are open to all ideas and not the ones I suggested. 

Mike

 Then will need some T-shirts,  One tee may be a old school cartoon...  Dunkin butterfly yo-yo being used by a kid with attitude, maybe blowing a bubble that says yo-yo nope on it…  

 Another may be a kid  getting no no no nope from a adult.   I could see a pencil sketch of a dennis the mennice looking blond kid, or of my son Nic....

The logo may need a very small .com, could be incorporated into the last letter, may not be needed at all.

 Best ideas / drawings have nothing to do with my suggestions and are coming from you’ll .  At the end of the day we need something that you would pay money for.

FYI, yoyoNope.com will be a father-son business, Half our profits will go to charity, trying to teach him about giving and business. my son is 10. He looks like Dennis the Menace,  and loves  competitive Sailing, tennis, skiing and is a good negotiator,  I say no, no, nope to him all day long  . Might have a T-shirt eventually that has sailing, and one with tennis.  Will attach a picture of him.   

Like your work, hope to work with you again.