A minature Barrel from the Orca in Jaws fridge magnet.

You could print it in yellow, or for the more movie accurate look print it in black then paint it yeelow, then scuff off some of the paint. To finish the model it also needs string tying around the top.

I've also modeled a tiny tracker/light as featured in the move to tie on afterwards, this is designet to print using an AMS in red and white.

The barrel takes 6x 3mm diameter by 10mm length magnets, the print is sliced to pause at layer 77 to allow insertion of the magnets, the holes for the magnet are generous and the magnets drop in easily, if the magnet does not want to drop in, flip it around, this is just your magnetic bed being an opposing polarity.