What to do with a spare Mini ITX build

I'll sadly be retiring a Mini ITX box that I built many years ago, because it has an i7-3770 CPU, and that's too old for Windows 11.

It has 16GB or RAM, an RX 5600XT, 256GB SSD, 2x6TB RAID 1 array and a BD burner. It has seen great use as my source code server and CI server for my gamedev activities, which doesn't really need the latest hardware, but I'm not really comfortable not getting any more security updates after Windows 10 goes dead.

Rather, the current job of this PC will be taken by what is my primary PC: a DeskMini X300 with Ryzen 5 5600, 64GB RAM and 2x1TB NVMe drives. The HDDs from the previous PC will move to a NAS.

And to replace my primary PC, I'm getting a MinisForum MS-A1 with Ryzen 7 8700G and eGPU.

I don't really know what to do with this spare PC. I'm particularly attached to the case, an aluminum pinkish abee acubic Mini ITX case.

Unfortunately, compared to today's mini PCs like the DeskMini, Mini ITX is huge, and I could really use the additional space. Any workload that I can think for this PC, I think the replacement DeskMini will be able to do better, and with a much lower space consumption.

Any ideas what to do with this very expensive and nice looking, but space consuming paperweight?