A TV holder like the one in this photo hides the back of the TV and is nice looking from behind. It will not hide all of the cables, so I would recommend this type when you have just a minimum number of components. I would be tempted to place a box on the base of this that housed the components and their cables with a power strip inside. It is ideal to have no more than one power cord emerging from your cabinet.
Tip: If you cannot install a floor-mounted electrical outlet, then use the best cable cover you can get to hide the cord and make it lie flat on the floor as it runs to your wall outlet
. Remember you are using a power strip inside your cabinet so you only have to hide one cord. I'll say more about this later.