
WCAG for designers
A checklist wrote by the British Designer Gari Reid to help designers ensure the product they design comply with the Web Content Accessibility Guidelines (WCAG).
(I personally keep it into my favorites!)

Cards for Humanity
Cards for Humanity is a practical tool to help you design more
inclusively.
How to play? Deal two cards: a person and a trait. Together they
make a random user scenario. You can use this scenario to test your concepts,
products or from a different perspective.

Accessibility for Digital Experiences 101
This is a comprehensive guide for those who need practical tips for designing
digital products more accessible.
Personal note: even if that guide is about
starting accessible digital products, I profoundly regret it was designed (and
validated!) with so poor contrast-ratios!
Free e-book (pdf format)

Design for Accessibility: Six Do and Don’t posters
Since I'm learning to design for accessibility, I had to undesign a part of the design process taught during my design studies. The six Do and Don't posters on designing for accessibility released by the Home Office Digital have helped my Undesig Process.

Blurred Vision simulation
Stark now offers a new feature in its plug-in for Sketch and Figma that
stimulates blur vision - astigmatism, presbyopia, dry eye syndrome, cataracts,
glaucoma and age-relation macular degeneration.
This option is available
in the pro version of the plug-in for $60/yr.