Your atelier is portable, letting you synthesize items wherever you may go. The space inside is surprisingly big, and you can decorate your atelier with various furnishings. Some of these offer special effects just by having them around.
Many of the items you synthesize are highly useful. Firis can come up with ideas to ride on certain items, allowing access to areas that were previously out of reach by foot.
Not only can you travel to new areas, but your movement speed also increases. These convenient vehicles can be further improved to be even more effective.
*Images are from the PlayStation®4 development version.