I got annoyed with my ninka eins2vier trash organizer. It consists of four buckets of two different sizes which fit snugly together. The alignment is very difficult though due to there only being a nippled base plate to align them. These guides are designed to help with that.
Print without support, as they are. I used Qidi ABS Rapido in red on a Qidi Q1PRO, but I am sure this works with anything, since there is no thermal stuff going on.
The author marked this model as their own original creation.