While you can hack Doom onto pretty much any device, figuring out what to do if you want to reuse your old devices for something a little more useful is slightly more challenging. That said, the hacking and homebrew community is pretty awesome, and the chances are you’ll be able to find a selection of projects for almost any device you want to hack to make more use of. It’s a great way of saving money while keeping those old devices out of landfills, and we’ve rounded up some ideas to get you started.