I love their waffle towels. I find it is pretty good for lights and light fittings. Storage stuff of all sorts. Plants. Office stuff. Kitchen stuff.
And if you don't need any of the above... tealights (natch); rhubarb tarts; ginger biscuits; I really like their rye crispbread.
As I am moving house, their packing cases are brilliant value; and the Pappi boxes, intended for storing A4 papers, are just great for books - sturdy, easy to carry and stack; and a size whereby they are not too heavy even with hardbacks. A gift at €0.99 each.
Bottomless cups of tea/coffee/pop in the café. In our Ikea (Bavaria) they do a breakfast deal with 2 Bavarian white sausages, a pretzel, a pint of wheat beer (yes, for breakfast) and the local newspaper for about €5. It's a clever lossleader - all the pensioner ladies dump their husbands in the restaurant in the morning and head off to shop.
Oh, and my student kids swear by the hot dog party packet for €20. That consists of 32 hot dog sausages, 32 hot dog rolls, a bottle of ketchup, a bottle of mustard, a jar of gherkins and four packets of crispy roasted onions.