This morning I went to an estate sale that included a large basement hobby machine shop. I bought some useful things and some "aspirational" things, of which the most optimistic was a box of several hundred brass 1/4-20 nuts, half hex and half acorn. That's several lifetimes worth, but I know how pricey these are when you need to buy just a few.
So if any MEM members need some of either type for a project, drop me a line. Free for the cost of postage.