Wow, you are so lucky that you have several pairs of old eyeglasses that you can match them with different cloth, so in others eyes, they are not "old glasses". But there is still something you need to do.
First of all, clear them and put them well in the times you don't wear, or the'll be scratched.
Secondly, make sure that the prescriptions are still fit for your eyes, because our eye prescriptions often change, and if the glasses lenses are not match with them, they will be bad for our eyes. But it will not be a problem either if the prescriptions are not fit for your eyes, you just need to go to the optician shop and change the lenses. So, it is easy to restore your old glasses.