Sand fillable ZigZag Apple Watch charging dock

I liked the idea of sand filling these stands, as https://www.thingiverse.com/thing:3851016 did, but I prefer the design of https://www.thingiverse.com/thing:3173669, so I combined the two into this remix. I also added a quite large hole behind the charger, so that it will be easy to remove it if needed. Finally I created a threaded funnel to make it easier to fill in the sand.

This was made for my older Apple Watch 2, which fits nicely. Unfortunately the latest Watch 5 doesn't fit, since the