I friend of mine needed to cover the TV shelves and book shelves to prevent a baby and a dog reach electronic equipment and her books.
For that I decided to add some CNC doors with piano hinges for the book shelves and some slide doors for the TV furniture.
Here are some pictures for the finishing doors for the book shelves
For the TV set, the hacking was more tricky cause and extension to the furniture needed to be added. After prototyping in cardboard and assuring that the measures were accurate, I CNC the wood with hexagrams symbols (UNION, PEACE and WATER)
Here you can see the pieces already installed