I know that there’s a place at UCLA where you can drop them on certain days, run by the LA Sanitation Department, but I tried googling and it was buried under listings that, like you said, charge a fee and cater to businesses. (They’re interested in 20 computers, not your meager hoard.) So maybe your city does have something but it’s listed under Hazardous Waste. If you already know where to drop old solvents and meds, it might be there or they might know.