Nathan Grant saw an opportunity to provide the fitness market with a tool that we've all been cobbling together with plates and curbs and anything else we could prop our heels up on to get a more upright squat.  In 2020, the Slantboardguy was born, and while he has been copied and ripped off by hundreds of new vendors, his drive to connect with the fitness industry (literally driving, in-person to meet people) and innovate his products continues to impress me. 

https://slantboardguy.com/us/