There is some talk now about how much an interruption in the work flow costs when you are, for example, a programmer.

Why not measure it?

Say one sits by one’s computer. One can then have an application with 1 button on it which says “I was interrupted”. This application then tracks the time of every interruption and creates some output like a diagram or some statistics.

Since it is to cumbersome to activate a program to press a button one for instance use AutoHotkey and map a never used key combination or maybe the scroll lock key to press said button.

If one is moving the cellular is oft kept within reach so have an app that reacts on a simple drum solo or morse presses. (one could of course have an ordinary app but since it too much job to grab the phone in the pocket, unlock it, find an application, activate it and then press a button, a simpler user interaction should be used)

This is already done by creating a hole in a board and then jam a chisel in this hole; but it is a clumsy and imprecise.

There are also already perfectly good router planes but they are expensive and have only one cutter and hence only one width.

But… as a carpenter one has a bunch of chisels. So why not have a holder for them that does what a router plane does? It is probably not as good as there isn’t any flat part of the cutter against the wood but for much of the work it should do.

Take this idea further to a rebate or shoulder plane.