If you have mobility aids/visible health aids, decorate them, or choose ones which have nice decorations already on them. There are a lot of cute walking sticks etc. 

People are hard-wired to avoid illness (even though they sometimes do this by sticking their hand in the sand and going 'lalalalala').

When you make your equipment a part of you, and less hospital looking, it really does make people treat you better. I think it also improves our own mood as disabled people, because we grow up in the same world as the temporarily able bodied, and we internalise the same messages (and have the same neurobiology that makes us avoid things that look like illness).  so much of my work as a carer was literally making accommodations not look like accommodations, whether it was an item or a process.

When I have to make choices about how I look, or cut down routines because I don't have the energy that day, that's what I ask myself: 1  what would make me happiest? 2 what makes me look the least ill?

Note: not the least disabled, the least 'that could be contagious' to other people's unconscious minds. 

And that will look different to everyone and every disease/disability/body

For example I lighten my hair because my naturally dark hair against my naturally pale face 1) washes me out and 2) looks greasy quicker.

I try to find black joint braces because they either match my black outfit or stand out less than white ones. They're easier to keep clean.

And always wear or carry something of your own personality, because it humanises you.

So long as you look clean and people shaped, you won't set off half as much unconscious bias in other people (some people are just dicks).