Multi-purpose cup holders
When you go to the drive-thru with a lot of people in the car, everyone wants a drink. The problem is the car does not have enough cupholders. The passengers will have to hold it the entire time, which is quite annoying, and they might even spill. So look at the following picture and forget about this problem.
Before leaving home, grab a shoe you no longer wear and take it with you for the trip. You can put your drink in there without inconvenience when you have your coffee since it’s the same size as the standard cup of coffee. Now everyone in the car can have their drinks and leave them anywhere whenever they want without a problem.