I suggest a “material claims conference” patterned after the 1952 Luxembourg Reparations Agreement and the Canadian Treaty Lands Entitlement Agreements for reparations and restitution against the Arab League for the 1947 Draft Law of the Political Committee of the Arab League and expulsion of the Jews from Arab Countries, North Africa and the Persian Gulf as documented by Justice for Jews from Arab Countries.
According to wikipedia, “The Reparations Agreement between Israel and the Federal Republic of Germany was signed on September 10, 1952, and entered in force on March 27, 1953. According to the Agreement, West Germany was to pay Israel for the costs of “resettling so great a number of uprooted and destitute Jewish refugees” after the war, and to compensate individual Jews, via the Conference on Jewish Material Claims Against Germany, for losses in Jewish livelihood and property resulting from Nazi persecution and genocide.”
More information on The Reparations Agreement of 1952 can be read here National Library of Israel
The Canadian Treaty Lands Entitlement Agreements concern indigenous First Nation land claims settled against the UK and Canada under certain treaty rights settled over the years. More information can be read here Canadian Treaty Lands Entitlement Agreements
As for reparations against the Arab League, in 2013 Israeli MK Shimon Ohayon Called on the Arab League to Accept Responsibility for the Jewish Refugees from Arab Lands.
The Day to Mark the Departure and Expulsion of Jews from the Arab Countries and Iran is a Memorial Day that is marked in Israel every year (starting in 2014,) on November 30 with the purpose of marking the departure and expulsion of Jews from Arab countries and Iran. It is based on a law sponsored by MK Shimon Ohayon (Yisrael Beiteinu) and passed in the summer of 2014 by the Knesset.
The 1947 Draft Law and more information about the expulsions, pogroms and internment of Jews in Arab Lands, North Africa and the Persian Gulf can be read here 1947 Arab League Draft Law – Jewish Refugees
As part of any future Middle Eastern “regional” peace agreement, there would need to be a claims commission set up and a claims fund for distribution to those populations affected which was supposed to have been part of the Camp David Peace Accords with Egypt (Article 8) and was supposed to have been part of the Israeli-Jordanian Peace Treaty.
Camp David Peace Accords – Article VIII The Parties agree to establish a claims commission for the mutual settlement of all financial claims.
Israeli-Jordanian Peace Treaty – ARTICLE 24 CLAIMS