I empathize with you. I applied for disability and am really limited in my ability to work. But I want to create income-generating businesses so I can have income that's not directly tied to my time and effort.
Depending on your disabilities it may be a tough road. The common wisdom is that most businesses fail — it takes a lot of skill, creativity, luck, and hard work to make a business that generates income, even for people without disabilities. I would say if money is your sole objective you might be better off doing light contracting work.
For generating business ideas, you might look at this post from IndieHackers creator Courtland Allen. He lists a lot of the pitfalls about business ideas he's seen when interviewing indie hackers: https://www.indiehackers.com/post/how-to-brainstorm-great-bu...
You might also want to limit your idea generation to businesses that will reliably generate income month-to-month (if that's important to you). And if you want it to be lucrative you might consider a business that solves problems for other businesses (since they tend to have money and are willing to spend it if your service is valuable — it can be hard for consumer apps to be very lucrative).
One thing I learned as someone with limited abilities is that it helps to be very clear about your own goals and spend some time thinking about a roadmap of what tasks (marketing, developing, etc) will help get you there. This is so you can minimize wasted time and effort, which is extra precious when you're limited.
I made https://extensionpay.com and it generates a couple hundred dollars a month with very little ongoing effort. It also helps other developers generate revenue from their browser extensions, so that gives me a good feeling.