This is a hard carry case for the Pointer 9000 model by Downloaded Goods that uses eight 5x2 round magnets to hold it shut. There is a pause in the print for each build plate to insert four magnets into the holes provided. No glue is necessary and the printer will print over the magnets with two layers.

Post-printing, you may have to open and shut the case a few times before the action is smooth, as the tolerances are rather tight rather than just relying on the magnets. PLA will be fine for this print but you may want to use PETG for better impact resistance.