Just wanted to show off something I've been working on lately. I bought my Milan in 2001 and it has never had a proper case. A few years back I rescued a nice aluminium ITX case from the dumpster, this has now been converted to an AT case for my Milan. I've 3D-printed all the internal brackets and mounts, and replaced the dead ITX PSU with a PicoPSU and an Arduino Nano.
The Arduino is used to read the push button, switch on/off the PSU, control the LED and this little trick
The single button is also used to switch the Milan on/off and reset it.
It's not quite finished, it needs a bit of paint and I haven't installed the SD reader yet.