You can use these free design and service tools for inspiration.
But you should always do user research with the people who use your services.
All links open in a new tab.
Design patterns for mental health
Designing for people with limited English
Microsoft’s inclusive design kit
A comprehensive guide to accessible social media
The gender inclusive language project
Inclusive design illustrations (opens in Figma)
Open peeps (free illustrations)
A massive guide of free accessibility testing tools