Seedling methods (don't buy seeds), elaborate on 9 seedling methods. These seeds are in your kitchen

Seedling methods (don't buy seeds), elaborate on 9 seedling methods. These seeds are in your kitchen.
In the coming months, more and more vegetable seedlings can be grown outdoors, and many vegetables need to be grown indoors in advance.
It takes time for seeds to germinate, and it takes a lot of time for seedlings to grow slowly, and it takes at least one month for seedlings to grow.
However, it is basically impossible to buy seeds in stores now. Friends who have kept their seeds are okay and can take them out to raise seedlings. However, what if friends who do not have seeds want to raise seedlings now?