I live in Dublin, hmmm, just trying to think of what you may not have already seen. I presume you did the Guinness Storehouse tour & went for a free pint at the top of the Gravity Bar, cool view.
Kilmainham Gaol (Jail) is not too far from here and very interesting, I would highly recommend it.
Dublin Zoo in the Phoenix Park is a good day out, and not far from Kilmainham.
Ghost Bus Tour, never did it but sounds spooky!
Malahide is a lovely little seaside village on the outskirts of Dublin, with a nice Castle & grounds, very pleasant on a sunny day.
A bit further away is a day trip to Co. Wicklow/Glendalough.
Another day trip is to Newgrange in Co. Meath, its 5,000 years old, older than stonehenge!