I have designed and 3D Printed some Calculator stands that may be of interest to the members here.
There are three different versions:
1) HP-41 Stand with a shelf for spare batteries, module covers, etc.
This also works well with the Swiss Micros DM42 and DM41X and the HP Pioneer Series.
I have also used it with an HP-67 and HP-55.
2) HP-71B Stand with a similar shelf and a compartment to hold a PIL-Box.
3) HP Voyager Stand.
This also works with the Swiss Micros Voyager clones.
I have several color options for each style so I won't list individual links here.
Me eBay ID page is at: https://www.ebay.com/usr/simpsonde