Selling 3D printer Dice Throne magnetic portal tile holders. These will be 3D printed and magnets will be added so they can be stuck together. You can simply place the portal tile card in the holder, and flip the portal tile card. 

See photos for how it will appear.

This will come with which will be enough for any scenario.
7 Green
6 Blue
5 Purple
4 Yellow
1 Red

Note - for consistent polarity, the magnets that are set across from each other will be facing the same direction. This may mean when you are setting up the layout that you need to rotate the piece so the magnet sticks to the next piece.

These will be printed on demand, and I will manually glue all magnets so they will be ready to go when you receive them.