All you need are wine crates. Get these from Majestic wine as they only cost about £2 each and they give that money to charity.
You will also need some nails, a hammer and possibly a saw.
I could only get the crates of different sizes at the time, and because I'm impatient I built it anyway. I tried various different arrangements of the crates but settled on this as it works as a dresser with a space for a stool to be stored underneath.
(Note the emergency getaway shelf incase of invasion or evasion.)
Comment me your space saving ideas.