The TL;DR is that it's a physical kanban board mixed with a time clock. I place them on a ticket rack hanging on the wall above my monitor. It like the ones yo

The TL;DR is that it's a physical kanban board mixed with a time clock. I place them on a ticket rack hanging on the wall above my monitor. It like the ones you see at restaurants... extruded aluminum... filled with marbles... slot on the bottom. If my board is full, I can't (or at least shouldn't) accept more work. It also is an immediate reminder of what needs to be done. The physical process of marking a ticket done and putting it in the finished pile helps to satisfy that need to have a visible sign that work has been done.