For a temporary grab handle run a nylon strap from the head rest to the seat base, tie a tear drop loop were handy. Try putting a handle on the rear door post. There seems to be a lot of extra holes in the seat base you could make use of a couple and make a grab handle. Just some ideas to get you thinking inside the box.$87!!!!!
Getting in the side door, I don't need to "pull" myself, but like to steady myself. I grab the hole in the plastic where the seatbelt comes out. Works OK and seems sturdy enough for what I need, but it would like to have better.