We dont have an IKEA cot so I cant coment on those.. I didnt get the IKEA cot because you couldnt move the side down and I wanted a cot that could do that to make it easier to lift her in and out...
but we have an IKEA chest of drawers/wardrobe thingy which is pretty good. Its pretty sturdy and she hasnt killed it yet even though she climbs into it all the time because she thinks it is a cubby house.. We also have 2 IKEA shelves in her room. One shelf is about 15 years old and still going strong (my mum bought it for me ages ago!), the other one I bought last year.