Cas is a user on cybre.space. You can follow them or interact with them if you have an account anywhere in the fediverse.
I think I just accidentally found out what the notch in the silicone thingy is for - it's for the rolly ball! #fidgetcube #ActuallyAutistic #t https://cybre.space/media/VaW4tOIe4t5K0Ik2V0U
(I love that the rolly ball is ALSO clicky, so genius.)