I'll be keen. I already have spare Pi's.
I already have the SideKick64 boards. I also have adapters for Vic20 and the TED series.
All the components have arrived, I think next week I will be able to start soldering the SideKIck64.
And now I can also offer the 3D printed case.
These cases will be valid for the Raspberry PI 3A+ or 3B+.
When I have everything ready I will update the first post with the updates.
Edit: I have everything ready to start selling the SideKick64.
First I will contact by private message with the colleagues who have been interested, in case they are still interested:
swisstoni
dawnsboy
a7mag3ddon
jabsy
After that I will be able to attend to new requests.
Prices:
Sidekick64 -------------------- 35€.
PI3A+ housing ---------------- 15€.
PI3B+ housing ----------------- 15€.
Plus4/C16 adaptor ----------5€ SOLD
Vic20 adaptador----------------7€
Plus shipping and PayPal fees.

Remember, only Raspberry PI 3a+, Raspberry PI 3b+ and Raspberry PI Zero 2w models are valid.