I am setting up a new cupboard office and the shear number of electronic devices to charge was becoming crazy! I hacked a cheap officeworks product for a solution.
I purchased 2 x 3 draw filing units which neatly stack and are only about $16 each. (Lots of colours too – I used these Officeworks drawers)
I cut a hole in the back (with the drawers removed) with a hole saw but I think a small coping saw would do it if you drilled a little hole to start. This was for the charging cables to enter the unit from the back.
I replaced the drawers, threaded the charger cables into the unit and joined them with a twisty-tie. I taped them to the back too to stop them pulling out with gaff tape.
Train the kids to actually use it 🙂