We hired some trees to use to divide between the cafe we were in and the section we were having our party. They worked great and really gave our party a bit of privacy from the rest of the cafe. The cost was cheap and it worked well.
We had a Hawaiian themed party so we hired some palms to create a festive mood. The palms looked cool and really made the photos. They didn't cost much to hire and they lady came and picked them up the next day which was handy.
We hired some plants for our bar area for our family reunion just to make it more festive. The plants looked amazing and it was great we weren't stuck with them after the reunion ended they just went straight back!