If you can try to sell them because if someone pays for your fish they will be less likely to harm them, try shop windows put up an advert in your local shop, see if there are any aquarium clubs in your area they might be able to help, good luck .
advertise local shop windows or post office, local papers,
do you know anyone with a tank & if they don't wont them maybe they know someone that will take them,
hope this helps