Soap. My mom and sisters always complement my hair and skin, asking what products I use. I just use 2$ Yardley bar soap for skin and hair. I also like them because they smell nicer than other cheap brands that just have a generic detergent smell.

Razors. For all shaving I use a safety razor. The initial investment is somewhat expensive but after that each blade is mere cents. Also much less wasteful. Make sure to store your used blades in an old medicine bottle to dispose of them safely (and for the garbage man's safety). Also find these to be way nicer on skin, 5 blade or whatever cartridge razors don't make a closer shave and remove and irritate skin much more.

Kitchen knives. Most cheap knives (and a lot of expensive ones) suck because of bad design. Most knives today are way too thick and chunky, to make them look more robust etc. what you need is a thin blade and a sharp, long lasting edge. Victorianox fibrox ($35) is excellent for the money and for most people you don't need any more performance. You can also use kiwi knives (10$). They are super cheap, perform well, but dull fast, a good cheap option if you know how to sharpen and hone. If you want more performance than the fibrox you can get a Japanese tojiro basic. These aren't very fancy but have excellent performance, being made of laminated vg-10 steel and having a much longer lasting edge. These are around 50$

If you cook and chop a lot and want a knife to take pride and pinnacle of performance then you'll want a hand forged Japanese knife. DO NOT fall for Japanese knife scams and do lots of research on YouTube. These will be around 200$ to 500$ (more expensive knives are for prettier, or famous blades). They are very thin, highly polished (it'll glide through food) and made of extremely sharp, extremely hard, hand forged laminated steel.