A woman HSPer from Norway uses an adult-sized, (stand on top, unmotorized) foldable, kick scooter like the shiny silver metal Blades so popular with kids. She walks badly without it but with it is quick and cool and yes – even graceful!
She has been using it for years and believes that she has learned and improved her balance with it and gets around very quickly. Also nice, this equipment is relatively cheap and easily transportable.