Better yet, CAD (Computer-Aided Design). Take a few classes, watch a few tutorials, buy a reasonably priced 3D CAD solid modeling application and starting with simple geometric shapes, learn your way around enough so that you’ll be able to assemble groups of parts and/or pieces to build something cool in your virtual 3D CAD workspace.
I started learning solidworks. I noticed definite benefits in memory and learning, as long as I wasnt being “coached” by my supervisor or his boss. They moved so doggone fast I couldn’t keep up.