Fashion clothes, if you're getting something that you'll wear for one summer and then never again then Primark is fine.
Salt, sugar, most herbs and spices, it's all the same stuff regardless of brands
Some snacks, often crisps are the same Aldi own brand as Walkers or whatever, or they're perfectly good. Yes we all want some kettle chips sometimes but it's all good, same for jelly sweets, a lot of chocolate, etc.
Hobbies for beginners, if you want to take up knitting then start with a cheap kit and upgrade as you get more serious.