Quite an old topic, but for the ones interested. Homey Dashboard is now live and there is a native Widget available 
Please provide feedback either in the Trashcan App topic ([APP][Pro] Trashcan Reminder 2.0) or on GitHub (GitHub - robertraaijmakers/com.trashchecker: Trashcan Reminder 2.0 is an app for Homey (Home Automation Hub) and gives you the ability to get notifications when your trash is being collected.).
