Walkie talkies are awesome, but what's even more awesome is one you build yourself. DIYer Daniel Chote's kids wanted a pair of walkie talkies, so he built the closest thing possible with a Raspberry Pi.
These aren't walkie talkies in the traditional sense. They use Wi-Fi and software to communicate with each other, but functionally they work exactly the same. This device uses a Raspberry Pi to power a voice chat service called Mumble, then packs it all into a handy 3D printed enclosure.
Even if it's not exactly a walkie talkie, it's a cool project nonetheless, and one that's great for anyone who's finished off that Stranger Things binge. Head over to Chote's site for the full guide.
I built a wifi "walkie" talkie for my kids; now you can too! [Projectable.me]