Make Jars you can use to build houses.

Posted by agitatedprisoner@reddit | CrazyIdeas | View on Reddit | 5 comments

You almost already could with steel coffee cans. You'd need a piece to connect them that doesn't need to be nailed/screwed so that they'd only come apart upward. Better if it's square than round. Then there'd be a thriving market for used coffee cans and you'd have a reason to keep buying more to build more cat towers. Once you have lots of cat towers you might have enough to build the steel skeleton of an ADU. Then you could build an ADU for all your cats to live in.