I would be interested. I actually shoot more film than digital.
Here I am, late as usual, with the formula. Apologies for all the usual reasons - if you saw the state of my darkroom and the mess passing as my archives, no further explanations would be necessary. A clean-up is long overdue, I ignore suggestions from home that I incinerate the entire lot...
This is the formula I use for my Adox MQ Borax developer -
Developer - metol, 2 grams - sodium sulfite anh, 80 grams - hydroquinone, 4 grams - borax (from the supermarket laundry shelves), 4 grams - potassium bromide, 0.5 grams, water to one liter.
I use it full strength. Times as per Kodak D76 with 10%-20% added for extra contrast OR regular times if processing with a Jobo. I find it gives a slower contrast increase than D76, so development can be held back a little of you want a 'lighter' negative. Users claim it gives better sharpness and a slight increase in film speed. May be useful for expired films.
Replenisher (I no longer use this, but it seems to work okay) - metol, 3 grams - sodium sulfite anh, 80 grams - borax (see as for developer), 18 grams, water to one liter.
Remember to start off by adding a pinch of sodium sulfite to your hot water (40C or less) before you throw in the metol, or you will surely lose the lot (it oxidises, I believe).
I recall finding this recipe a long time ago on a web site (maybe even this one) from a gentleman named Ian Grant.
If you Google Adox MQ Borax developer a surprising amount of useful information will pop up.
Mixing home-brew developers is easy but can become addictive, also buying the initial chemistry for your mixes may run into a bit of money but the chems last a long time. I have powders I bought almost 20 years ago, still all good.
As for scales, electronic ones can be bought cheaply from hardware stores. I bought mine at a Reject Shop, 12-13 years ago. Ebay has small scales people use for weighing, would you believe, coffee beans?? Not cheap, but someone I know has one, and it works absolutely niftily. Also good for weighing - well, other substances. Use your imagination here. (For example, my partner uses my scales to measure small amounts of concentrated garden plant fertiliser, ha!!)
If this catches on, maybe we can start a new thread. Happy alchemy, everyone!!