Here are a couple of options for you:
https://www.quickjack.com/
https://www.maxjax.com/maxjax-right-for-you/
Possible drawback for you on the maxjax is that it should be bolted down when in use. Your paving stones would not allow that to be done...
For doing things like brakes and suspension work, the quickjack might be a good option. There are others on the market, but I knew about these two.