Anyone Made Their Own Octane Booster?

Just some thoughts, has anyone made their own concoction of octane booster as a lot of what’s in it is also in quality paint thinners?

 

I’m not sure how RON is calculated in what ratio and it would be nice to know how it’s done.
On another matter I work with paint thinners and back when I was an experimenting shifty apprentice a long time ago I use to ‘have some thinners away’ when the lights went out If you know where I’m coming from?! I used to run my bikes on it and occasionally drip feed an abundance into my Reliant Regal van too. It ran very well in all fairness but I was a little worried about melting any plastic internal floats in the carbs.
So on another matter I’ve found from reading and smelling octane booster to contain toluene and xylene, acetone, and a few more which is basically the make up of higher end volatile thinners.
So, my thought, there should be no harm in giving the ‘old tank’ a good glug now and again considering I used it full on many moons ago....