I use 2X6s. Yeah. Pine boards. Cut different lengths, in 2 foot increments. One end on each sawed at 45 degrees.
Works fine in my standard home garage. Up to three boards (4.5 inches). I'm not trying to get the car
way up in the air. Just high enough to get a floor jack under it. Can't be done in front without some lift (350R).
Can slide lift in under the back, but there is no room to lift the handle!
So, I set the long board in front of a tire, and drive up on it. Stop, get out, put a shorter board on. Drive up
on it. Place another, even shorter board on, and drive up. If you have big garage, you might do more
boards than me. But at some point, you need to worry about how stable your stack of boards is.
Two boards is enough to get my new floor jack under the rear. Never done the front.
Depending on what you are planning on doing, once you can get a lift under it, you can raise it and
put it on jack stands.
Yeah, I'm Scottish.