Antifreeze sucks, most antifreeze all have Glycol....
Methanol is fine, I have used both methanol and isopropyl.The isopropyl has really strong fumes, and leaves that wintergreen oil garbage.Methanol just leaks easy, I have also got a mouthful of it and I didn't die.
Don't use anything with R134a, that stuff is garbage.And don't use a minifridge.If your going to buy an air conditioner, get one that uses R22.