The life of an engineer and/or PC enthusiast has two states: a) too many IEC C14 kettle leads b) not enough IEC C14 kettle leads There is no happy medium.
I've had a drawer full of them for a long time now. At one point I even grouped them by installed fuse, so I could pull out one with a 3A fuse installed, or a 10A, or whatever, at a moment's notice.