For our Disney trip, I was thinking about purchasing some type of backpack or bag for my Permobil electric wheelchair. I was thinking a special bag could save my family from needing to carry some things.I know Permobil makes something, but I don't think I can use it because it looks like it hooks into the two slots on each side of what I think is usually the neckrest slot. I keep my neckrest in one of those slots due to scoliosis. Does anyone know of anything that might work?