How can we help my daughter to better be seen when we are out in public?

My daughter is six years old and 1‘5“ tall because of her dwarfism.when she is walking around, especially in public. People aren’t expecting a tiny little toddler sized six year old at times. Is there something she could have/where/hold to be more noticeable, a few time is it she has gotten bumped into out in public, even stepped over and knocked down a couple of timesbecause she wasn’t seen.

Of course I make sure that she is OK, but it would be great if we could have something that is up high enough to be in an adult line of sight a little bit better.