A problem is simply an unrealized solution. - A. Bernadette
According to The School of Life, study human unhappiness to find your next business idea.
If you can't identify a problem you are trying to solve within your company, you are a part of the problem.
Sustainable thinking teaching us without considering the triple bottom line -- people, planet, profit, as your stakeholders and treating reduce, reuse, recycle as key parts to your policies and procedures your living in the past.
I invite you to check out the below ideas, make them better, and keep questioning your ethics as you go forth.