My server is finished!

Hey guys, my gf and I want to do something with the Arduino we got. We are getting a CS degree, so programming is not a problem, but we have quite basic knowledge of electronics.

What could be a cool simple (but not too introductory) project we could do?

The arduino came with a bunch of sensors (ultrasonic distance sensor, humidity, ...) some input (joystick, RFID reader/writer, buttons) and some outputs (LCD display, 8x8 LED matrix, bunch of color and RGB leds).

Try to finish some of the projects I've started in 2018. Right now I have a todo list text file, along with multiple written lists (the written ones are more focused on a single project normally).

-Finish the startpage I've been doing off and on for at least a month now. I ended up making a lot of it command based (just need to write the scripts for the commands..). I had a little config menu but I just got tired of it and the text box is autofocus anyways, so I figured I'd make it command focused.

-Nice little root safety script as I call it. I've made very stupid mistakes as root before. I once made a typo and ran "chmod --recursive 644 /" while half asleep. I believe I was trying to run that on the current directory I was in, but as you know, the . and / are right next to each other. Basically the script would see what you're doing and echo "you're about to do x, are you sure that's what you want to do?". Something I know I could knock out in a day, but I've been putting it off for at least a year now.

-Compiling notification. I saw something similar once a few years ago, and it was so fucking cool. I remember it being a Mac, and it had a notification that would basically tell you how many files and shit you had left to compile if you were building something. Kinda want to build something for polybar.

-FUCKING RUBBER DUCK DEBUGGING TO THE EXTREME! This one was inspired by a comment someone made once months ago. Might have been here, or reddit, or in real life, not sure. Basically a big ass fucking rubber duck with LEDs in it that will like glow red if your code wouldn't compile (I think Visual Studio has like an automatic error detecting thing in there?? Maybe something similar if I can figure that out). Honestly not sure how the fuck I'd do this one, but I love the idea and I really want to fucking do it

There's more shit. These are just the main ones I want to attempt sometime in the near future.

I just wanted to develop a cool webapp-controlled lighting for my bar.

Next things I know, there is electronics scattered everywhere, 2 multimeters to find what the fck is wrong with a PSU not outputting 1/100 of the current it's supposed to, said PSU opened on my desk, and I'm trying to find a capacitor online because there isn't any fcking electronics store selling spare parts anymore in my city.

Context:
- PSU means Power Supply Unit, in this case a computer one.
- PSU was given by a friend and is out of warranty
- the total consumption for all LEDs is 24A @ 5V consumption. A refurbished PSU is ideal for that
- that PSU is rated 2A @ 5V on the stand-by, which is perfect to power a Raspberry Pi. The issue is that there is a sharp voltage drop as soon as you try to use more than 20mA.