Put your Gridfinity box safely in your bag with the Gridfinity Transport Box. There is room to give the lid clearance and for a litte bit of foam to prevent it from ratteling. It prints in place without support.
Please check the other Hinged Clip Cases too. It is fun they say.
Other sizes available by request (inner box size L(x)*W(y)*H(z) and purpose of use needed). Please place your request as a comment at the model not as message.
Tip: If your printer/filament is not tuned quite well and the hinge gets stuck, a little WD40 to the hinge and gently forces back and forth might help to break it loose. I had this experience with eSun ABS+ with slightly too high printing temperature. After the WD40 procedure it is working fine now.