Grinch Heart Magnet

Quick to print and pre coloured for you. You can easily change any colours by object, or paint in Bambu Studio. There are 2 holes for magnets, 5mm x 2mm that I got on Amazon. You can add glue for security, however, the holes are the perfect size. It takes a little effort to force the magnets in, and I don't believe they are going to come out even with prying. But, if you are selling or have little ones, they would be a choking hazard.