I have seen paramagics using plastic tackle boxes, so don't count them out. Nice thing about them is you can label each little compartment, so you know what goes where.

Emergencies are emergencies, the bad thing about being a highway cop/EMT is that, in addition to providing aid to the injured, you have to lay flares, direct traffic, store vehicles, question witnesses and involved parties, measure skidmarks, draw diagrams, try not to get run over, etc etc etc. I never expected my EMT bag to try to walk away before that night...