I designed this to make the monitor and laptop power adaptor and whole cable management much cleaner on my IKEA Linnmon secretary.

Inside the Power Adaptor guide, it fits my Samsung monitor and LeNovo laptop power adapter.

Everything is hold up to the table with a small 3mm self screw to make it sturdier and doesn't allow it to move. Anyway, if you don't want to use screws, you can use a double sided tape.