You can get jeans for 10 €, lasting about four months (so a year if you have three), shoes are roughly twice the price, three t-shirts usually come in at 5€ (Aldi is wonderful at that – thinking of which, I mostly bought my clothes there, including them in the general groceries category[0]). I bought a used washing machine when I moved in for 90 €, which had to be replaced after two years, so this would be 3.75 €/month. The oven came with the flat and worked fine, I got an old fridge from my grandparents which was still functional when I moved out, but likely sucked up far more energy than necessary.
Tech was relatively decent (used X300, used X41, a weird desktopy-mediacentery thing) when I moved in, I got a T410s after two years from the money I had saved when the battery in the X300 failed and sold the latter for 500€ (350 after replacement of said battery). Trips to my parents were usually paid directly by them, but they obviously weren’t strictly necessary either.
You can get a döner and a drink or two for ~8 € – surely not eating out, but not eating in either.
[0] I spent about 25 € there per week, which would give 120 €/month for strictly groceries and a further 30€ for extras (cheap pans, clothes, paper etc.).