On-bike tool storage

The main reason I like the granite stash kit is probably the reason others done like it . It has mounts on one bike and one bike only. I have multiple bikes. I have never been tempted to remove it and put it on other bikes because it takes fair bit of effort. So I know my oh shit kit is Always there 

Granite chain tool in one bar end, Granite tubeless plug kit in the other bar end

I like the idea of these for the bike I can't fit a OneUp tool in the steerer of, but unfortunately all the grips I like have a closed end ☹️

unfortunately all the grips I like have a closed end 

Hacksaw or a drill solves that depending how much needs removed and if a locking collar or not.