I see we have a lot of new followers lately, which is awesome! I thought I'd note that many of the teachers who have posted a request for a design have not yet gotten anything. If you have a bit of time on your hands, or a student needing a volunteer project to do, please check out the requests that do not yet have a "FULFILLED" tag. The Google Group is here and there are plenty of requests! You do NOT need to make an actual physical model. Just the design is a big help (many of these teachers have access to a 3D printer.)
Or if you're a teacher of the visually impaired, please go ahead and post what you need. I remain hopeful that we'll spool up some group energy and get the requests fulfilled.