If you want to take things up a notch, become a donation location and set up a cage or bin where people can safely drop off and donate their eligible containers at your site. Once you have collected enough at the site, you can then drop off the containers to your local container refund point, or ask them if they can help you manage that process (they may charge a small fee). They might even be able to provide collection infrastructure like bins or trailers. The depot will do all the sorting and counting for you and deposit your refund directly into your account by EFT or PayPal. Find the details of your local container refund point on the map or pop in for a chat.