I bought a pair of Yaktrax Pros for my Everest Base Camp walk. You need some extra traction when you are going to be crossing glaciers like the Khumbu where a fall can be decidedly fatal. I have since seen even lighter ones such as Vargos but I need such things so little I doubt I will be replacing mine. If i had thought about DIY I could have saved myself a few bucks as the series of suggestions below illustrate. A few 1/4″ nuts and some cable ties or even just a used bike tube and a bit of spare time and you are good to go! People are so ingenious.