Summary

I saw this hanging drain thing in The Wolverine and wanted to make it.
You hang it outside and when it rains the water collects and flows from cup to cup.

The cups have a little notch in them. Print the holders and slot them into the notches of the cup then pass some wire through the hole in the holders to chain.
Wait that's not enough. D: You need to tie knots so that the holders are held in place. I forgot about that. Maybe I'll redesign how that works later