Previously, there have been ways where people have started fires innovatively and used the available limited resources to make things work. Recently, a new method of boiling water has come up which is quite unique. If you have magnets, there is a DIY that can help you boil water through them! It is definitely not the most useful thing but there is no harm in knowing.
You may have heard about this phenomenon before in your physics lectures, or this might be the first time you’re hearing about it. Apparently, an alternating magnetic field is created by the rotation of magnets with different poles. This generates an eddy current in metal, which heats it up. This is the same as an induction cooker, except that an alternating field is created electronically at a high frequency of 20-100 kHz.