It is better to make a donation to something like The American Red Cross and specify it is for Ike relief. Red Cross will give people vouchers based on immediate needs which will allow them to purchase a wide range of items. That way the items the people receive are new and what they need, as well as pumping money into the local economy.
Trying to send a package to random people will hurt the distibution systems and you will have no idea if the people receiving the package can use what you have sent.
I used to (from 1970-1983) work for the Red Cross and found that most recipients considered what they got from us as "assistance" and not "charity".