There are a great many images on eBay, of out-of-copyright works such as old postcards, ephemera, or paintings, that can legitimately be uploaded to Commons. A while after an eBay sale ends, its images disappear from view and are lost to us.
The task of uploading such images manually is laborious and time consuming, so much so as to be a deterrent.
It would be beneficial to have a tool or script that can automate as much of this task as possible, akin to Flickr-to-Commons.
Because the majority of images on eBay are still in copyright, use of the tool should be limited to (or rate-limited for everyone except) users who have applied for and been granted the ability to use it (such as is done with AWB, for example).
The tool should account for the fact that some offers on eBay include multiple images; the user should be able to select (or deselect) some or all of the images from a given offer for upload. It should work on any eBay domain (ebay.com, ebay.co.uk, etc.)
All edits made by the tool should use an identifying tag in the edit summary, and all images uploaded by it should be added to a category associated with the tool.
This may make a suitable project for a hackathon or student activity.