121 is a partner agency of the DDB Group based in Lima, Peru.
I have seen quite a few good visual identity guidelines, from small to big companies. The main difference is for SMBs it's important to create more compelling symbols to standout among the competition. The creative process doesn't change but usually the outcome is quite visible. Grohs Visual Identity is a great example of beautiful branding work. It was created by Martin Grohs and it's definitely worth the feature here on Abduzeedo.
Martin Grohs is a designer, digital artist and illustrator from Leipzig, Germany. For more information check out https://www.behance.net/martingrohs