Is there a tracer pen or something to trace cardboard templates and be able to cut out template that was made from cardboard to metal
I think your best bet for that is to take a photo with a ruler for scale and trace it in CAD.
There are some decent tutorials on YouTube for making parts from a photo with fusion 360. I thought this one was the simplest to follow: https://youtu.be/iaUMYRP3CxA
I don’t know if this helps. But I have a logic tracing board. Works great. I use it all the time. Not sure if it’s within price range. But just some information to your question. Here is the link.
They have different sizes.
I have also done the picture with using a ruler. The challenge is making sure your picture is perfectly vertical and horizontal to get it accurate. Used this method before i had the logic tracing board. I got pretty good at it. But wanted to find something more effective.