Funko Pop Modular Hexagon Shelves for Wall Display

So my niece and nephew decided to start collecting Funko Pops and needed a cool modular way of displaying them on their wall.  While there are plenty of modular, hexagon designs out there, I was unhappy with how they all have tabs sticking out that are used for connections, and some of them even have visible nail holes.  So I took it upon myself to create a nice clean design. Of course they still need to be connected, but instead of having tabs protrude from half the sides, and holes on the