Here's some of my own decorations with secret storage:
This is a cake-stand (that I use for everything but cakes) that I made by placing a plate on a vase (I'll probably add directions for it on my diy page).
Book storage: I got that book at Micheals (Which I must advise you to not do, because they are outrageously expensive ( $6 whole dollars!) and you can make one yourself. I don't have directions, but Pinterest does). As you can see, that's where I keep almost all the keys I love to collect.
Do you have a vase or mason jar you like to display flowers in? Paint a mason jar (or vase) so that it's no longer see through, then put flowers in it. No one would ever guess!
Hope you found this post very helpful. Thanks for coming!