I wanted to hide a treadmill that we have, so I bought an old TV armoire on Craigslist and disassembled it.
Then I reassembled it in the room where the treadmill is, removing the back and bottom and as much of the guts as I could, including the shelf that the TV used to sit on and several other shelves for miscellaneous old school electronics. I then joined each set of doors together on the back with metal plates, adding an additional section to the bottom since the original bottom panel had to move up. Then I cleaned it and painted it with chalk paint and hung the doors with new hinges and added new hardware. After that I bolted the back of it to the wall with angle brackets and installed a TV on the back wall, slid the treadmill in and voila! It’s a great use for a type of furniture that nobody needs anymore, thanks to the invention of flat panel TVs. With the installation of a rod, it could also be used as a closet. Actually, it could be used to hide all kinds of stuff.