My deep fryer lives in a tool polycule. Here’s how to stop buying things your friends already own

The key to happiness isn’t hoarding gadgets – it’s loaning them out and buying fewer things Sign up for the Filter US newsletter, your weekly guide to buying fewer, better things They live under your bed and in your basement, your garage and probably in that weird cabinet above the fridge that requires a stepstool.

Alton Brown calls them unitaskers: the tools and appliances that aspire to do only one thing and do it…