If you have to live poor, i've been skipping a couple of times. Which is basically looking whether there's anything edible in supermarket tips. I found my very lovely purple orchid whom i saved and brought back to life, chocolate cake that went out of date just that day and 15 perfectly shaped peppers. There was nothing wrong with them whatsoever. I've found carrots in them before and mostly baked stuff. If you do that, which i doubt but you never know

then try and make sure you pick stuff with packaging, always wash the vegetables even if they're in packaging. This is because, obvious reason, you don't know who's handled it and supermarkets tend to pour bleach into their tips to stop people eating the food they throw away
oh yeah, they don't like it so wear dark colours and get ready to run at any time. You'll need a torch and don't veil your face in the hope it'll bring more security, people aren't sympathetic to people they can't see and they're more likely to let you off if they catch you and see you're a girl. Most people who work there are actually sane and don't want the food to go to waste so they allow people to skip it and turn a blind eye
Get some good books to bide the time. You don't realise how beneficial it is to get away from the internet and go back to basics sometimes. You appreciate silence and time.
Hot water bottle to keep you warm. You don't necessarily need the kettle but it can come in handy.
Oh and cook stuff, no ready meals

I've had a meal of baked beans and barley once and the only thing that made it edible was the fact i'm good with my spices
If you do do it, let us know how it goes afterwards

i.e. your little survival tips
