You can get 25% discount off all the FAMILY range of products at Ikea Dublin as well as free Tea and Coffee on weekdays . You just have to  sign up for the Ikea Family card – it’s free. You can’t do it online – you have to sign up in the Dublin Ikea shop which is located  in Ballymun just of J4 of the M50
Read more here
If you use the Belfast Ikea or any other UK Ikea – you can register for your Family Card online here