I’ve just bought a few pack of these 8x8x500 sticks. And yes I tried some wood glue from the hardware store and they simply stuck very well to the PETG prints.

From the top:

• 3 Chinese 2.5Gbit managed switches branded Horaco
• 3 Chinese N100 “NAS” ITX boards (the cheaper green ones). They are in a Proxmox hyperconverged cluster (HCI)… aka Proxmox + Ceph.
  • Each one has a Pico PSU
  • a PCIE card (mounted on an right angle PCIE extender) with 2 additional 2.5Gb realtek NICs
  • 2 NVMe drives (mirrored boot drives)
  • a SATA SSD for Ceph
• an empty shelf for a ITX board (an AM4 with a bunch of NVMe drives I have yet to move from my previous rack)
• the last shelf can accomodate:
  • an automotive power distribution that feeds 12V to the switches and the N100 boards
  • a couple of 12V to USB PD boards, that I use to power the type c devices on the Rack shelves on the back
  • a (missing) TFX PSU that will power the AM4 board
  • a second TFX PSU that feeds 12V into the distribution blocks and powers basically anything else.

I also have some rack shelves on the back:

• a Pikvm based on a Pi2 I had laying around
• a wled controller for the fan lights + a esphome temperature based fan controller
• a Sonoff Dongle M
• a IEC C13/C14 power strip that distributes power to the PSUs

Needless to say I bought everything before the DRAM craze and I feel very sad for who has to work with the current market.

Everything is mounted on custom 2U or 3U 3D printed 10" rack shelves.