Floor plan software?

Hi folks,
I'm putting up a small shop for my electronics but I don't have a clue about setting it up the right way. Does anyone know of a simple and easy program I could use for this? I'm looking for the kind of program where I can make models of my equipment and move them around as needed. I once saw a home interior designer use one to "move" the furniture around in a "virtual" living room. That would be perfect.

Home plan Pro costs $39: https://www.homeplansoftware.com/
I use Autosketch by Autodesk, it costs $100.

You can also if you like go to the nearest Home Depot and get the CD on home designing from there. I'm hoping that after I can get myself straight that I too can start myself a computer and audio shop, I feel that this is a good program to use to get my shop setup. You might however have to leave the planet Uranus and come to Earth to find a Home Depot. :lol: