I like this for my office! Dump A Day 24 Amazing Uses For Old Pallets! Ok, it's not technically re-purposed decor for and event. but it gives you an idea on how to use old pallets in for your new decor!
We've used a similar corner shelving unit to create space in a small 7 by 9 ft room. It's a great, easy shelving solution for small spaces (although installing it was a bit tricky as the walls weren't plumb.