I have provided you with a holder including a compartment for the salt and pepper shaker. The model holds the shakers with a diameter of 53mm as standard.

If the size does not suit you, you can simply scale the object up or down.

For easy removal of the support and for beautiful surfaces, I recommend that you either use PETG as a support filament, as I did, or the Bambulab Support Filament for PLA.

For PETG as an interface filament, I recommend my print profile.

For the magnetic closure, I printed four magnets into the object. Simply pause on each required layer and insert the magnets and then continue printing.