TBH, I don't think these are to be recommended. In my opinion:
Nailed cable clips aren't good for water pipes, which are subject to expansion/contraction, condensation and vibration, etc. I want clips to be secured with a screw and stand-off the pipe from the surface.
Although it may work in some circumstances and for short times, I don't trust aluminium foil to protect timber from hot-work. A good-quality plumber's 'mat' in good condition for temporary insulation. There are several alternatives approaches (press-fit, Tectite, compression joints, pre-assembly) that I prefer to risking a fire!
I don't mark valves by writing or putting sticky labels on their operating handles because the writing comes off with use. Purpose-made valve tags are best. (TBH, in a domestic system If dryness is assured then a luggage label marked with black biro will last decades.)