You can put Alexa in a Raspberry Pi, and that is pretty cool.
Alexa is Amazon's intelligent agent, like Siri for your living room. Standing nearby, you speak to it with a question or a command, and it responds verbally.
Normally Alexa lives inside a $180 device called an Amazon Echo, or the new $50 Echo Dot. But Emily Withrow at Northwestern University's KnightLab told me it was possible to put the Alexa code inside a cheap Raspberry Pi hobby computer. And I happened to have an old Pi lying around.
So I gave it a whirl!