Might be worth a polite ask on the free sites? When clearing my mum's stuff I found a mini machine, I struggled to get it working. It had no bobbin, the thread went down through a hole then up into the needle. Nasty, flimsy plastic, I don't know why she had it as she had a proper machine. In the UK you'd pick up a working machine for under £50 but I think you might be in the US? Anyhow, ask around your aunties, neighbours, friends' parents, someone always has one tucked away & will be happy to know it's being used again. The older mechanicals are easy to maintain yourself but if you're given an electric one do get it checked for electrical safety (in the UK this would be a PAT test).