Never Forget Your Phone Charger at a Hotel With This Suitcase Trick. There is only one problem with this trick to wrap your phone charger cable around your suitcase when traveling. Most of us carry several charger cables when we travel. Need one for the phone, one for the smartwatch, one for each phone owned by your fellow travelers, one for the bluetooth speakers and headsets. You get the problem now? So, if the suitcase trick won't work for you, what to do? My solution is to write down each charger cable and what it charges. Then, it is a simple matter of checking them off the list when it is time to leave. Duh.