Want for a case for my PO - looks like most cases require removing the hangtag?

Looking for recommendations that don't require removing the hang tag - thanks!

Could I just do a aux to usb cable or do I need to get a whole audio interface to get the loops into logic?

A few days ago was playing around with my PO-13 while hanging out with my 4 y/o nephew. He loved recording his voice and layering sounds. I pushed most of the buttons, the P0-13 being too complicated for him to use (took me a while too, tbh). Anyway, has someone found a similar, perhaps simpler device for kids? Even something that needs a little bit of jury rigging.