Took a while. I can probably make it better, the latch piece needs a little tweaking since the 7th ball is tricky and I have smaller rubber bands for the retainer band.
Total parts cost was around 2 bucks.
I still need to figure out the funneling issue for the inside of the pod. Kinda weird to just shake it all the time I guess.
Update: Done, I can probably do a V2, but it's functional.