accessible van for my little hero!

I have been chasing down every possible way to get financed for a vehicle that will be accessible for my son Jaxon (Monkey). I am a stay at home mom due to the needs of my son, and having a 6 month old daughter. We are just looking for any type of used vehicle that would accommodate all of Jaxons needs and save mine and my significant others back in the process. We have very high hopes and dreams for Jaxon, and we push him daily to do his best. I just want to be prepared for the worst. (him staying immobile). Everyone in our family would be eternally grateful for every penny raised toward our goal.  This is not something i am generally comfortable doing, but at this point i am willing to do just about anything that is legal to get something that will work for our ENTIRE family. Thank you in advance, i cannot express how thankful we would all be.