On behalf of a friend...
...Whos wishes to evict her ds2 from her bedroom. He will have to share a small room with her ds1, they are 4 and 2 respectively, but the room is tiny, bunk beds are the only option. However she wants to have plenty of headroom on the lower bunk so the younger child can sit and draw or whatever without headbutting the top bunk, but the older child not headbutting the ceiling iykwim. Oh and storage underneath would be good...
Sorry, I'm not very coherant, but anyone got any ideas?