Hey having fun is relative but i will try and answer you question
one you can go to the beaches e.g labadi,la palm, kokrobite, tema,bola beach etc
you can go the movies at silverbird
you can go to night clubs like aphrodisiac
you can go to church?
you can go to tourist sites like kakoom,wli, aburi botanical gardens,mole national park, boti falls, nzulenzu etc
well you can stay home and watch tv, movies etc
whatever makes you tick just go for it