Double Twin Lift Bed.

My sister asked me to look into building a double loft bed for my two nieces, since the younger was outgrowing her bed and found a plan for one from "The Hand Made Home". http://www.thehandmadehome.net/2011/08/how-to-build-a-loft/
I didn't love how their plan had a rope ladder and no center support in back, so I changed that up. Took around 50 hours work time total, but was a lot of fun and both of my nieces totally loved it, so it was well worth the time and energy! :-)