Floor possibilities, what if?

I haven't stopped by in a while but I am still fighting and trying to improve.

Yesterday I watched a video of a father saying his injured son was basically growing into his wheelchair. A sad description but a very true one that made me think. Of course sometimes that is our only option. I've been trying to figure out a way to get on and off the floor without much assistance for a while, haven't quite found it yet.

But was thinking today, I'm in my chair the majority of the day, even exercising from it (better than nothing) so I am growing into it in a sense. 

But just think if I could get on the floor on a regular basis, out of my chair. And start trying to move in ways that I don't in my chair. I'm thinking of what if I started trying to turn / roll from side to side? Not easy but I know I can do it and imagine if I practiced it regularly how much it would improve and get easier. 

And what else would be possible to practice on the floor? A lot I imagine but I want to try find and focus on a few basic movements / exercises that will strengthen my core and improve my mobility and practice and train those few things daily and as I improve it will open up other exercise possibilities. But I'm not sure what those few things should be, please feel free to share with me your thoughts and ideas.

In a wheelchair all day, of course if we could choose we would much rather be on our feet. But if we can't do that right yet perhaps getting out of our wheelchair onto the floor will help more than we think.

Thank you for your help and never give up.
Ian