Yeah she usually comes in the post office truck when she's delivering mail. So I guess I'll just ask her if its okay to give her trash bags.
Depends on the size of your packages. You can usually just ask for a stack of those USPS Mail Bucket. I get them all the time and drop them off at the post office or sometimes give them to the driver. Basically they are on loan to you. But if you ship stuff out all the time they give them to you to use and keep around the house or office or whatever.