So, with all this snowman love going around I thought I'd add my own contribution. So, behold
This breeder can, according to paper anyways, give you 48 uranium for your 12 investment.
Instead of screenshots, I decided to do a video. Enjoy
A couple key notes is to check the planner. There is 1 air block (occupied by the pipe) and 13 water blocks. Every other block possibility must be filled in. Also, you want some source blocks outside the evaporation range to keep this cool.