I bought a used $30 radioshack smoke-colored hinged cover and I just let the hinge tabs hang off the back of my Dual 1019 turntable. It’s close enough that if I place it just right I can cover the table when NOT in use. When playing a record I just pull it off and lean it against the wall until I’m done playing records - like one of the original United Audio 1019 covers!
Recently I bought some extra ebay plexiglass so that I could fine-tune the fitment. Plexiglass can be glued together by just wetting both pieces with acetone. I also bought a $10 DUAL aluminum logo to glue over the existng RS logo! I didn’t want to pay $150 for a custom clear plexiglass cover.