Here is a link to an organization dealing in Humanitarian Aid. They are now working to get aid into Gaza. Their budget is very cost effective. It seems a good place to contribute..NOW
As for the the future..of course dialogue and negotiations for Peace..BUT..
Gaza has been the most a densely populated underdeveloped camp since 1948. Following Oslo agreements development started but too often the few benefited and the many not as much.
After all the destruction that we have seen..This is the time to think of not only rebuilding
Gaza but recreating
The countries of the world, the countries of the region (along with Israel) should invest money and energy in building NEW infrastructure and housing to help relieve the overcrowding.
Parts of the Sinai could be annexed to Gaza (along with areas of the Negev in a land exchange program between Israel and Palestine).
Joint economic efforts should be reestablished. Palestinians should have more job opportunities in Palestine alongside the opportunities in Israel.