Flippable Animal Feeding Sign

This is basically just a sign to let us know if one of us already fed our guinea pig. He likes to trick us by squeaking like he hasn't been fed yet when the other one of us is not around. I put some magnets on the back so it can adhere to the metal cage. This design can be used for a variety of other situations of course. Any other types of animal, this could be useful. Or you can change the wording and use it on a dishwasher or something.

I made the two halves to be screwed together with 4 M4x12mm screws that has a recessed spot for the nut on the underside. I also used 4 small magnets 5mmx2mm to secure to the cage. I also printed the sign in contrasting filaments I changed the color in the middle so I wouldn't have to color in the lettering.