Selfhosted

Digitus has a lot to offer for 10" Racks. I use a lot of their Basic stuff for my Racks. AS a Server I am a fan of Mini-PC's. They are (imho) good enough for SOHO users. For storage an off the shelf NAS is small enough to fit inside the Rack. I did not find a good option yet for a TrueNAS solution (maybe one of the NAS solutions where you flash your own operating system?).

From my 10" homelab:

• Enclosing: Digitus 10" 9HE Wandgehäuse. But today I would get the 12HE version of it (my Homelab expanded beyond the available space)
• Patchfield: Digitus 10" 12 Port LSA Patchpanel Weiß. There are also keystone version if you prefer them. I did go for this because it is cheaper and I only need RJ45.
• Power connector: DIGITUS 10 Zoll Steckdosenleiste. it has 4 sockjets and a switch. I am using 2 of them.
• Shelfs for Servers, etc.: Digitus 10" Fachboden. I use them to keep my Mini-PC's and router in the Rack.
• Router: Draytek Vigor2927 it just fits on a shelf and all Ports are accessible. It is connected to a Fibre-Modem, so it just being a router is good enough for me.
• Switch: ALLNET Switch smart managed 16 Port Gigabit. Unfortunately I could not find an option including PoE (that is reasonably priced...) so I went for this managed Switch and an extra PoE Switch.
• PoE Switch: YuanLey 11 Port Gigabit PoE Switch, 8 PoE+ Port 1000 Mbit/s, 2 Gigabit Uplink, 1 SFP Port, 120W 802.3af/at. It is not directly obvious from the product page. But the 2 included Rackmount ears work for a 10" Rack.
• Mini-PC as Server: HP EliteDesk 800 G3 Desktop-Mini-PC . You can get these on the used market for cheap. Look if you can find one with an i5-8500T (KabyLake architecture). These chips have very good Transcoding qualities (Quicksync)
• NAS: I use a Synology DS-918+. It fits on a shelf isnide the Rack. but due to Space limitations (9HE instead of 12HE) it is now stacked on top of my Rack.

I don't know where you are located. So maybe you need to check if these are available to you.

Have you considered putting your kids up for adoption?

Jeff Geerling put together a list of a lot of 10" Hardware: Project MINI RACK

I believe raised beds for kids have a lot of space beneath them for putting servers. Just make sure they can't pull the plugs 😜

Reddit == Evil, but if you're looking for ideas there's an entire subreddit dedicated to this. Tons of ideas, links to 3d prints, and more:

https://www.reddit.com/r/minilab/

Are pi’s or other single board computers options for you? My home lab runs on a handful of pi’s a dying mac mini (I am looking at replacing the thing with a better computer) and a Flint 2, running OpenWRT. I have a Rock 5 or something like that but have never been able to figure it out.

It's a bit hard to justify a 3d printer for a single project, but if you think you'll use it for other projects then that's the way I would go. I just finished putting together a bit of a Frankenstein 10" rack based around these https://www.printables.com/model/1564648-rail-with-integrated-caps-for-10-inch-rack-system https://www.printables.com/model/1173672-10-mini-rack-all-3d-printable

Biggest callout would be to make sure the printers you're looking at have a large enough bed size to print the model you land on. The original one I was planning on printing couldn't fit on my printer.

In addition to the other comments, that's also !minilab@lemmy.world, it's pretty dead though