Just got a free Raspberry Pi 3 B+ when I bought another. So I have one without a purpose. Any cool ideias?

@irene nah I would rather use it for some useless but fun project

Code a small webapp you can use to play music, check the temperature and stuff.
Always fun.

Smart mirror?

Here's a simple challenge:

Use Linux on one, Windows IoT core on the other and make them both communicate. Any protocol and networking or non-networking method is acceptable.

Use one of your favorite languages on one and some other languages you are interested in on the other.

Make them communicate with each other

make them play chess with each other

If you find a thing please post it. I am looking for a fun raspberry project, too. But everything i can find is either not fun or it is too low for using an raspberry.. I mean temperature measuring and such stuff.. There is no need to use raspberry. A raspberry is laughing about such things. Any 2€ esp8266 or even arduino can do it with only a fraction of power usage (... I hope my bad english is good enough that someone can understand this sentence :D)..

Use the relays and sync your Christmas lights to music

make them go to random domains and index/scan all their content and find the most common word on all the the web.

Add a cheap webcam and do some simple computer vision.

@miguel91 How did you get one for free though 🤔

Attach it to your TV and have some streaming or video service (youtube.com/tv maybe) run on it

@drekhi12 the store I bought it from had a sale

@miguel91 lucky you

Make a Pi.hole and connect it to your network, then Watercool it.