The wife and I made a retro game console. But we mostly use it for kodi
this post was submitted on 12 Feb 2026
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Leave it running an i2p node
I literally had the the same pi collecting dust. I put it in an aluminum enclosure with an M2 bus, added a spare drive, and put home assistant os on it. SUPER FUN. now all those sensors and ESP32s I have can provide meaningful use to my life.
Look up Pi-Hole, it's an adblocker for your whole home network. It blocks ads at the DNS level
RetroPie? A Pi can handle most of the older, amazing games.
Pi4 is better for anything with video as it has a a hardware decoder. They dropped the hardware decoder in the Pi5 and I think you need to buy an extra module to have one for them.
Oh wow, thank you. I didn't know that!
Sell it for double your money back.
Set up a Tor Relay. Help the Tor network.
Desktop PC
Set it up as a PiHole.
Which reminds me: I need to finish getting mine hooked up to my LAN properly.
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If you have access to someone with a 3d or can find the parts online; you could build a gameboy with it.
Pi hole if you don't have one, others have mentioned home assist, you could also look at ubo pod, although that isn't out yet. Really just use it to host whatever you want
CasaOS seems like an easy alternative for a multi purpose server
Turn it into a music visualizer. This is a fantasy project I’ve had
https://setiathome.berkeley.edu/ or https://boinc.berkeley.edu/
seti@home:
You basically donate computing power to a project looking for extra-terrestrial intelligence.
I had a spare Raspberry Pi Zero 2W and I made mine a watch showing time, weather and it shows me the latest Hackernews headlines on a 320x480 touch screen. :)
https://www.seti.org/news/seti-at-home-going-into-hibernation/
UC Berkeley has announced that the volunteer computing part of SETI@home will stop distributing work and go into hibernation on March 31.
Then jump to Einstein@Home. They optimize their workloads for ARM64 architecture. Stop looking for aliens and start looking for pulsars.
Jellyfin server
Do you play guitar?
Yes.
Check my other comment then :P
Im intrigued. Like a effect pedal?
Correct, if you get an audio HAT (like pisound) or a USB audio interface you can have an amazingly good digital effect pedalboard installing PiPedal. The software is FOSS and works extremely well, you can connect to a web interface to manage presets by either an Android app or webpage, either through Wi-Fi or by local hotspot served by the RPi. It comes with some effects, but you can install most lv2 plugins you can find online (requires some Linux knowledge though, but is simple enough).
The best part: there is support for ML effects, basically you can download model replicas of classic amps and pedals and run them there. It's powerful enough to chain multiple, especially in the pi 5.
You can also connect midi buttons or pedals by USB to control presets and it's effects, all configurable in the UI
Damn, I need a new raspberry pi now. Just bought a pi 5 for home assistant this month. With the price increase, this isn't a good time :(
Useful? I think you're doing this hobby wrong.
/s.
PiHole and Plex? Plex will help generate need for a NAS. It worked for me.
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Mine runs Orb and Tailscale as an exit node.
What do these things mean?
https://orb.net/ monitors your internet performance.
https://tailscale.com/ access your home internet or devices when you’re away from home. Usually only helpful if you have a NAS, but I’ve used it to stream tv shows without having to get bothered or blocked because the service can only be used in the US. I watched some NFL over youtubetv while in Germany for example.
I have a Pi 4 running as a PiHole and Pi 5 running as an SDR server with 2 radios attached to it. Both are connected via Tailscale as well so I can access both from anywhere I want, especially useful for the PiHole so I have adblocking anywhere on any device.
The Pi 4 is massively overpowered for a PiHole, but if you got one laying around doing nothing, go for it.
I have my PiHole running on a Pi Zero with a USB Ethernet adapter. The WebUi is a bit slow, but the actual DNS with unbound as a backend isn't any slower than on a Pi 4.
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Set up Pinchflat, automatically download podcast audio without ads, connect your podcast app to it via an rss feed.
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