In the south, you can take a
Ring of Kerry tour. In Dublin you can tour the Guiness brewery. Stroll O'Connel street. See the artwork; Stiletto in the Ghetto, Tart with the Cart, Hags with Bags, etc. See the castles in Cork and Limerick, and others scattered all over the country. (I once found a travel book called "Castles of Ireland" that gave details and locations)
In the north, you can tour the Bushmills distillery. You can go by the Belfast shipyards, where the Titanic sailed from. You can go to Giant's Causeway - find some young girls and recreate the
Houses of the Holy album cover.