Everyone probably already knows this, but it was news to me at the time that I could direct-connect to one other 10GbE device without a switch. My desktop is happily connected to my NAS, while using Wi-Fi for everything else.
Specifically the CRS305-1G-4S+IN, a great little switch and can run either RouterOS or SwOS. Pair with some decent copper DAC twinax from fs.com and you're all set, the only problem is reliable access to < $200 NIC cards that doesn't require eBay.
The selection of 10GB cards has really improved relatively recently. Search Amazon for "10gb network card" and you'll see lots of choices for around $100 USD.
There’s a lot of not-so-home use switches available on eBay at great prices depending on your region. I bought a US-48-750w for like 200-300usd a few months ago, which has two 10g ports and 48 1g POE ports.
You can get some multi gig switches with 1 or 2 10g ports brand new from net gear for about 250USD. Things like the MS510TX.