When I hurt my ankle I had a green halter broke morgan. All I did was ground work. we did lounging at first, following CA lounging for respect. Then yeinding od shoulders and hind quarters. Once she was good with that we started using ground poles and other obstacles that I found to play with.
One of our favorites was to lay a ground pole on the ground and have her walk towards me but the catch was she could only step with one foot over the pole at a time. If she put more than one foot over she had to back up and try again. Once I was more mobile I would end our sessions by walking on the trails around the farm or down the road on a lead rope.
All of the work we did strengthened our bond immensly. I also suggest looking ta you tube for ground work ideas. I found all sorts of fun stuff to try on there without spending $ on extra equipment.
The love for a horse is just as complicated as the love for another human being...If you never love a horse, you will never understand.