Inspired by ads for the TabBuddy, this is a tool to assist with opening cans for people with limited finger strength, or mobility issues. Designed in Fusion 360.
 

Slide the opening over the tab, and lever the tool up to pull the tab. Then flip the tool around, hook it into the tab and use the rounded cornerto roll backwards and pull the can open.

There is an angled edge on the hole to make it easier to slide over the the tab.

No supports required.