I found that a Brother P-touch D610BT label maker (and possibly other similar models) fit nicely in a Milwaukee PACKOUT Compact Organizer (48-22-8435) but the TZ-e cartridges and other associated cables didn't fit very well so I modeled this insert to accommodate them.
The cutout under the TZ-e tape is for the included USB cable, the power adapter fits in the other slot, and the paper manual is stored underneath the label maker.
I printed in PETG with Prusa MK4S with inner and outer brims as the corner near the power adapter is fairly thin at the base and was lifting off the build plate.
The author marked this model as their own original creation.