Never posted here before, but thought you might enjoy my DD's fairy costume.
Because she uses a wheelchair, we were trying to come up with a costume that would be easy on and off, plus keep her from sitting on a bumpy skirt.
We settled on an apron design. The skirt is made of individual flower petals - 2 different colors of thin satin, some voile with iridescent 'dew drops', voile over satin and purple veiling.
EDITED TO ADD - Tulle ---- that's the name of "Veiling" that I was thinking of.
The bodice part is made of a light purple printed cotton with embroidered soft satin for the neck part. The waistband is denim that had colored shiny splashes.
Instead of ties on the back, I made the apron strings very short on one side and go all the way around on the other side like a belt. Then we added strings to the short side and loops on the other to tie the 'apron' on without her having a bump on the back to sit against all night.
She also had wings, made by her sister, who is an artist.
The wings attached to her wheelchair as shown in the picture. She wore a fuschia long sleeve tee shirt and a pair of capri pants under the fairy apron.
Anyway, thought it might give you some ideas for something for a child who is in a wheelchair.