I have:
A few beelink branded mini pcs. One of them is a proxmox box (home assistant VM and MQTT vm). The other is a linux desktop that's getting pop is put on it today!
I have a pair of AM4 boxes: One is going to get turned into the forbidden router (dual 10gb ethernet ports for my ISP upgrade) the other is maxed out ram (128gb) and runs proxmox and a pile of VM's. 1tb NVM and 3 6tb drives (spinning rust, zfs mirrored) for backups and gobs of data.
I run several RPI's (octoprint, camera servers etc) and gobs of ESP32 gear (presense, temp, led displays)
My next box will be a NAS, likely something with 8 bays. After that I would like to build an AM5 box and get a solid GPU in it for local LLM's
I may also invest in another beelink or nuc style box to run other utility apps on (think frigate NVR and a coral tpu)