Folding reusuable carriers to keep in your handbag. I'm trying to keep one clean for when buying clothes.
Washbags, refillable bottles for toiletries - quite nice and very cheap.
Pans have been mentioned on here recently as good and cheap.
Everything really - our entire house is Ikea and nothing has been a disappointment.
Frozen Daim cake, meatballs, cheese, reindeer salami. Pick n Mix. I have half an idea about doing my main food shop one week at Ikea. OK, I will have to buy bread, salad, milk etc somewhere else, but I could get meatballs, mash, daim, cheese, salmon, hot dogs, vegetable burger things, biscuits and cake, cheese, ham joint - enough for several meals at leat.