Most garden decorating ideas like this aren't necessarily designed into the overall garden plan. Temporary decor like this changes and is placed according to season, holidays, or occasion. I have one neighbor who actually changes her decor and plants almost weekly and even sometimes daily.
Whimsical and decorative theme garden designs usually make room and accept a lot of ideas and change that goes along with the style they're designed with. And just like this one, along with a few planting ideas, it doesn't take a lot to change the entire atmosphere. Plants that are to be planted and fresh vegetables that will be used make a nice display even if for a few hours or days. Creating a new look on a whim.
