I’ll start: avoid Hellman’s easily by making your own mayo. If the eggs squick you out, or you just want bonus points, I use this vegan garlic mayo recipe. It keeps for weeks and I don’t miss mayo at all. This requires a blender - any kind is fine.

Soap: someone near you makes bars of this that are better quality and sells them for roughly $5, I guarantee it. If not, making it is pretty straightforward as long as you follow instructions carefully and use established recipes. If you want to go custom, you can also use a lye calculator. This one requires an immersion blender.

Breyer’s/ice cream in general: Get yourself some xanthan gum for regular dairy, and add soy lecithin to your list if you want to do vegan ice creams. The xanthan gum inhibits ice crystals for a smooth and creamy texture, and helps with scoopability. Soy lecithin helps emulsify oil and water, so you can use it to bring up the fat content of soy or oat bases to be closer to a heavy cream. Requires a blender.

Gillette: get a safety razor. Mine’s a vintage lady Gillette I got off eBay. You will save so much money on blades it’s not even funny.

Lipton: your local grocery store might have loose leaf tea in the bulk section. If so, try that first. If not, check out Arbor Teas instead. Small business, fair trade, high quality stuff, and the packaging is completely compostable, making it an awesome zero waste choice.