Staying electric code compliant while cleaning up in-wall network box
That power strip in there won't do.  Power strips are intended for temporary wiring, not as a substitute for the permanent wiring of a structure.  Behind your TV for 20 years is one thing, inside a cabinet like this - no go.  

Also, blue masking tape is not a legal cover for box holes.  

If it's what I think it is, that blue-tape area has cutouts for another duplex receptacle... you can lick both problems by fitting a receptacle there.