A very simple remix of @Christopher_jason's Jack Stand Wall Mount (https://www.thingiverse.com/thing:4873180) awesome design. I only added a center channel as it creates extra walls down the load-bearing center of the hook, and as an added bonus, uses less filament and it's faster to print.

Down side is that you do need to add supports, but only for the void. Otherwise, I ran exactly the same settings and filament as the original author.