How do I convert 3D objects to Garry's Mod?

I am thinking about using Milkshape to create a new object and/or import an existing object. I don’t intend on using said object as a ragdoll. What would be a good method to do so?

Also, if anyone knows of a better program that’s free or priced towards Milkshape, feel free to mention any because I’m too much of a cheapskate to do so.

I actually wouldn’t know a lot about porting to source. Go look for a tutorial.

Also, Blender is free but you’re gonna need some time to learn it.

In terms of modeling, I have this program called Animation Master, and it can allow me to export to obj. That’s the easy part. But I dunno if this site even recommends it just for simple modeling.