When I was out in Blanchardstown the other day I popped in to Dealz and found their New Wedding and Hen Party Range. Considering some of the items were already sold out and others lacking in stock I am sure this will go quick especially with people trying to budget. They have a good mix of items for the hen party and then signs, pace cards and accessories for the Big Day itself. Starting from €1.50 this would be a great place to look if you are trying to save a few euro on decorating.
However great it is this range is not stocked in all stores. Just make sure to check your local one has it before you go out of the way to call over. You can see the full store list on the Dealz website.