Different aids some of my S/i's have
Mika: After the whole demobat thing, Mika does sometimes need mobility aids. She will either use crutches or a cane depending on if it's her ankle or knee that's bothering her.
Stelle: Between her anxiety, adhd, and autism, she does get sensory overload a lot, so she always carries her sound canceling headphones. She also keeps super dark sunglasses with her in case her photosensitivity gets too bad. And a pen and notepad for if she goes nonverbal.
Bradey: She has really thick glasses, even when she was a toddler. After the whole Nogitsune thing and playing Lacrosse so hard in high school, (and all the injuries that came with both) Bradey can have a hard time staying upright and walking. So when she's having a bad day, she uses a wheelchair to get around. She also sometimes has to rely on Google translate when she forgets how to speak English (which is only when she's exhausted)
Celeste: Her hearing was damaged in The Battle of New York, and she's used hearing aids ever since. They were damaged when she fell to Sakaar, and that's when she learned that Loki knew sign too.
Fae: Is mostly deaf in one ear and needs a hearing aid.
Evan: Goes non-verbal, and relies on text to speech.
Lucinda: She's been in in enough Jaeger accidents that it's not surprising she would need mobility aids. But she also has a mechanical arm and robotic ocular replacement.
Séamus: Wears a knee brace most of the time, but will use a cane at home/in camp.
Reggie: Uses a back brace most days.
Curli: Uses a cane for mobility reasons.