The Fork-Assisted Climbing Shoes were invented by Violet Baudelaire in The Slippery Slope to aid her and Quigley Quagmire in their treacherous hike up Mount Fraught. They were built by adding several forks recovered from the caravan to the bottoms of Violet and Quigley's shoes, and used in conjunction with a Candelabra Ice-Tester. 

These may appear in Season 3 of the Netflix adaptation.