If you can learn how to repair things there will always be need of that in a siege. Returning value from utter losses will be of great need. edit For a couple

If you can learn how to repair things there will always be need of that in a siege. Returning value from utter losses will be of great need. edit For a couple simple examples consider the bic lighter. The strikers are made well enough it is possible to refill them and reuse them several times. Here is a video I made on it: https://www.youtube.com/watch?v=4fnnDu-_hso https://www.youtube.com/watch?v=4fnnDu-_hso possibly not the best video but it just shows it isn't very hard. What about a ventilator that needs a part? Not hard for someone who knows a lot about 3d printing.