Multi-functional furniture might be the coolest thing ever! They can be used as one thing for one situation, and can become an entirely different piece of furniture to fit your needs in a different circumstance. Best for Caravans & Tiny Houses. This unique table can be used as both a table or a tall shelf depending on your needs. Need an extra table while having a dinner party where you'll need extra seating spots? Just roll your shelf over and turn it into a table that can fit 5 or 6 more people.