Thanks for the link ventilator. But I thought anyway that it should be something like this. By the way I like ventilators work. I am not sure if it fits, but it´s a interesting idea

I have also to add that a logo must not be simplified to the excess. If you know for what you want to use it for, you can make it the way you need it. You can then also make a extreme simplified version for print on small things or cotton after you made the complex logo.
It´s a bad idea to limit yourself with such strict rules. I think everyone here knows the rule to do much with less.
But I think designing a childrens book cover with minimalistic stuff is totally wrong. It´s the same wrong to design the cover of an expensive artbook with an overload of cartoons. You must know for who and for what you do it and then think how it should look.
For example the logo of psygnosis is extreme beautyful and easy to remember. But it is like an airbrush. And it´s no problem because its mostly used in digital mediums.

Anyway I don´t make the rules, don´t put too much weight into my comment