Homemade everything?

I've been making my own bread for years, though as I mentioned in a previous post that this seems something of a pandemic fad as well, but even I am discovering necessity is truly the mother of invention.  It is strange what I can get and what I can't.  Mayonnaise is apparently on the list of things that are currently hard to find on local shelves, at least at a reasonable price.  So I tried my hand at making my own, I'm personally a fan of Miracle Whip and looked for a recipe for just that, it was pretty easy and used stuff I always have on hand, we'll see how it turns out.  I've also been trying to make fake cheese, which hasn't had near the success.  My first attempt was basically bacon flavored jello.  Yesterday's trial had a promising texture (fresh mozzarella) but it didn't really melt or taste like anything, though one attempt did yield a promising parmesan substitute; we'll see what happens!  I also discovered the margarine I've been using instead of butter has whey in it (which is why I can't do real cheese!) and locally I can't find any of the 'plant butters' so I've been trying reliable recipes with peanut butter and or canola oil instead, everything but the frosting has turned out, but that was because I added cocoa powder which made it really stiff, I had to hand shape a toupee for each cupcake but it tasted great!  With google to supply recipes, what can't you make at home?  And hopefully you can still eat the failures!  Well, everything except the fake cheese...