Toe Spacers

Correct Toes: https://correcttoes.com

Barefoot Shoes

Vivo Barefoot: https://www.vivobarefoot.com

Xero Shoes: https://xeroshoes.com 

Lem's Shoes: https://lemsshoes.com

Foot Strengthening

Yamuna Foot Fitness Kit:  https://www.yamunausa.com/products/foot-fitness-kit?variant=12171984633924

Gait Guys Podcast

https://www.thegaitguys.com