We need to know these FIVE things in my opinion:

*How to make bread
*How to grow veggies/fruit/herbs
*How to make shampoo
*How to make soap
*How to make toothpaste

If you don't have a garden, please do try out grow bags or make your own bags and also see if elderly folk who have gardens or allotments in your area will allow you to grow stuff and take care of their garden/plot in exchange for produce....

Blueberries and walnuts are excellent for both mental health and physical health. Now during all the stress everybody is undergoing we need good emotional/mental responses and strong immunity.

Artemisia known as wormwood is number one remedy for bronchitis, asthma, covid, all kinds of respiratory tract infections. It grows in hot countries, not sure about the UK but you can get it in infusions...Amazon for example sell wormwood infusion for around £9 or so. It is rather bitter so you may need to sweeten it....

Get ready to "possibly" consume cockroaches, mealworms OR crickets.

An extract of the following link: "From 1 January 2018 came into force Regulation (EU) 2015/2238 of the European Parliament and of the Council of 25 November 2015, introducing the concept of “novel foods”, including insects and their parts. One of the most commonly used species of insects are: mealworms (Tenebrio molitor), house crickets (Acheta domesticus), cockroaches (Blattodea) and migratory locusts (Locusta migrans). In this context, the unfathomable issue is the role of edible insects in transmitting parasitic diseases in humans"....https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6613697/

I planted runners and carrots as seedlings then I put them with onions in tubs I got from Lidl which I lined with garden fabric and made holes in bottom.

These containers just cost me about £3 or so from Lidl, perfect for putting on patio, balcony or back yard. Line the sides with garden fabric or bin liners. I got garden fabric from B&M but could be Wilko's or Poundland too.
Then put some holes in with hand drill (very cheap to buy and good for doing holes...there is no noise or electricity needed) or anything else that makes holes. Fill with compost and plant your seedlings. Feed according to needs of plants.