[header] How to collect trash in your car [title] Keep an empty tissue box filled with trash bags in your car. [step] Keeping trash bags in your car will help you collect trash as necessary instead of just tossing it onto the floor. Among the most inexpensive options is to use an empty tissue box. 
Fill it with plastic bags saved from trips to the grocery or convenience store, and grab a bag whenever you need one. [title] Use a cereal container to collect trash.