So basically, I've been raising seedlings and whatever on my windowsill, and had the idea of being able to pour water through the screen of the open window without having to cut through or lift the edge of the insect screen.

I had some neodymium 3mm disc 2mm thick magnets that are good for closing small lids and things, so made the holes for them.  This way you can have multiple outside spouts and one or more inside ones, and you can snap them where you want them to water multiple things separately for however much water they need.

Sure you could walk around the few metres, but I wanted to try the concept, and I'm still learning in onshape so it was a fun little distraction for a bit.