The most cost-effective thing might be to restore it to good running order and then drive it yourself. (By “yourself”, I mean any relative who wants it.) If it costs $1000 to reanimate and you drive it for just a year, that’s less than $100 a month, you can’t get any decent car for that. It won’t have ABS or airbags but it’s nice and big, and you know it won’t have body damage or an engine that’s going to blow a head gasket in two weeks.
Otherwise I’d probably list is for $1000 as is and hope some shade-tree mechanic thinks it would be a good project car. Might take a while to find the right buyer.