Hi there,
SO , I (we) now have a newer improved version of the original, Xiao 3D printed socket. It is Skinnier so it fits better, includes another set of pin holes (makes it footprint compatible) the older version required you to add another female pin row as seen in the pictures, This New one is Nrf, C3,S3 and C6 Xiao compatible, and I did have to move the POGO pin position up slightly *" thanks @KrrK " *so it’s why it’s marked as a WIP . 
I’ll add in a PCB to slip in underneath with Pogo’s and a 8 pin small pitch dual row connector SWD compatible ( UART) debug. soon.
You can add your own also.
Pins are all you need and it Supports Stacking, If you know how. check it out.
I rarely solder them anymore 
Files are included in the Zip here, and I’ll add 'em to thingiverse (b4 some rips-off posts on Etsy) shortly 
these sockets are all inspired by “Renzo” he did the first ESP32 one it was giant but worked well and as a Tech we begged for stuff like that.
You made your own pins from old Axial resistor cutoff’s, they were just malleable enough but still held the shape. These more rigid pins I use makes the tech more like a “Shark-Bite” connection (for all the plumbers and mygyvers out there) 
You see first pic it bites into the Pin and there is a Pin in the Hole also, the push against each other makes it a solid connection no Soldering
It is printed and pictured here in that sweet Seeed Green PLA+ at 50% , HB 65, nozzle 205, dry, dry filament, sunlu. no supports , prints standing AOK.
Pins are from digi-key or Amazon?
You can even use it as a spacer , the through Hole pre-Soldered Xiao will mount up …
HyperLapse, print one today! 
GL 
PJ 
XiAO_Socket_Post.zip (2.6 MB)