Freecycle and similar websites

I know I'm on a Rationing Diet which limits what I can eat but, tonight, I went to a Pop-up Pantry thing that costs £5 for whatever you have. All the food is donated by supermarkets etc. Thought I'd give it a try to see how it works. I expected a box of random bits and pieces that somebody else had picked........but I was wrong!
I had to keep choosing what I wanted in an either/or sort of way.
Do you want Milk or kefir; Clover spread or Port Salut cheese; lettuce, leeks or sweet potatoes; tonic water or orange squash, chapattis or sliced bread, plums, pineapple, grapefruit or tangerines, parsley, Vegetarian, vegan or meat (choose 2), rice or no rice, chocolate crepes or not, tinned tomatoes.
Some of these things can be ration fodder - I chose Milk, Clover, lettuce,  chapattis, plums, tangerines, lettuce, sweet potatoes, tinned tomatoes, a kilo of rice, crepes, Three bean chilli and an 8 portion bag of KFC (probably worth £5 on its own), Apparently KFC and Nandos freeze unsold chicken and donate it to Food pantries like this one.
Its open to anyone who pays £5 but free food is given to anyone in need.
The charity that run this have been given space in a  Fitness centre. Lots of super-fit young people passing by, making me feel incredibly old and fat.