The StateArt Museum and ContemporaryGallery inside the First Hawaiian Bank (tallest building of the state) are free whenever they're open. Both can be accessed with a 5 minute walk from ELS.
Go downstairs for lunch at Downtown and pick up one of their delicious to-go panini or quiche and salad combos at the counter. Consume with pomegranateitalian soda. Prepare to become addicted.