We got Steph a pink castle bed with some Mary Cecily Barker fairies on it (its homemade but gorgeous) from ebay when she was getting out of the cot ('cos we needed it for Ryan!), just to help her be more interested in the 'big girl' bed, and she loves it.

Tomorrow, we are picking up a Ferrari racing car bed for Ryan from ebay (though there was a dragster bed that I would have preferred. Oh well. This one finished first.), which will hopefully get him excited about bedtime and staying in his bed. At least it has edges that come above the height of the mattress to stop him rolling out. As for the ages they will grow out of them... I don't know, and I'm not too worried. Steph's has a really good mattress, and so will Ryan's, so when they do grow out of them for their 'even bigger girl/boy bed' I won't have to fork out extra dollars for new mattresses.

I would highly recommend ebay! Unless your DH is feeling crafty!