Basic front wheel alignment at home for free with the right tools

What basic tools are needed to do a simple alignment check at home?

I'm aware you can't easily do a comprehensive four-wheel alignment check at
home (e.g., to check if a vehicle has been in an accident) but at home you
generally are checking your own vehicles which you know the history of.

All you really need to check, I think, is caster, camber & toe, right?
And caster is a mathematical function of camber, right?

So do I only need to accurately check camber and toe?

If so, what tools do I need to check that at home, and what basic methods
are needed? For example, on Amazon are these $50 toe alignment plates.
https://www.amazon.com/dp/B0F1XZ6H8D

But those toe alignment plates bolt to the axle? Really?
Don't we want to perform toe measurements with the vehicle on the ground in
the normal sprung geometry? On a turning plate perhaps?

Since those toe alignment plates have a strap, can they be used with the
wheel on (I realize the tire pushes the alignment plate out about an inch).

For camber, this $100 camber angle gauge seems to be a magnetic mount.
https://www.amazon.com/dp/B00PB7V3SU/

Is that sufficient to measure camber & toe (caster can be calculated)?
Or do I also need this wheel clamp contraption to get the camber right?
https://www.amazon.com/dp/B07532CB8M/