Ikea, indeed. We had what was called Gulliver at the time. Relatively cheap, adjustable (higher for first 6 or so months, then lower, and finally one side removable to make it a toddler bed).

One thing we learned is that babies are constantly on the move, even when swaddled, always find ways to tip things over, roll off sofas and chairs, ... and puke over anything and everything.

Well, we love them!